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• In plain English, what are Django generic views?

  - by allyourcode

  The first two paragraphs of this page explain that generic views are supposed to make my life easier, less monotonous, and make me more attractive to women (I made up that last one): http://docs.djangoproject.com/en/dev/topics/generic-views/#topics-generic-views I'm all for improving my life, but what do generic views actually do? It seems like lots of buzzwords are being thrown around, which confuse more than they explain. Are generic views similar to scaffolding in Ruby on Rails? The last bullet point in the intro seems to indicate this. Is that an accurate statement?

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• Realtek RTL8201 CL/PL NETWORK DRIVER

  - by Marin

  Can anyone help me please?I had to formate my friends computer & she didn't have the motherboard cd so I have to download the Network Driver from internet! I need Realtek RTL8201 CL/PL NETWORK DRIVER but I can't find the right link to download it!Can you please help me?Thank you;)

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• usb wifi dongle on ubuntu server, cannot install realtek driver RTL 8188cus

  - by Sandro Dzneladze

  I got cheap Ebay wifi dongle from HongKong, Im trying to set it up on my ubuntu server. Occasionally need to move server, so it cannot always be connected to router via lan. Anyhow, usb wifi came with a driver cd. I uploaded files to my home directory and tried to run install script (RTL 8188cus): sudo bash install.sh But I get error: Authentication requested [root] for make driver: make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/2.6.38-8-server/build M=/home/minime/RTL 8188cus/Linux/driver/rtl8192CU_linux_v2.0.1324.20110126 modules make[1]: Entering directory `/usr/src/linux-headers-2.6.38-8-server' make[1]: *** No rule to make target `8188cus/Linux/driver/rtl8192CU_linux_v2.0.1324.20110126'. Stop. make[1]: Leaving directory `/usr/src/linux-headers-2.6.38-8-server' make: *** [modules] Error 2 Compile make driver error: 2, Please check error Mesg Any ideas what Im doing wrong? There is another driver folder for linux called: RTL 81XX, which doesn't have install.sh at all! I tried to use make command, but I get: make: *** No targets specified and no makefile found. Stop. Any help? this is first time I'm installing driver from source. Im on Ubuntu 11.04 server. lsusb Bus 001 Device 002: ID 0bda:8176 Realtek Semiconductor Corp. lspci -nn 00:00.0 Host bridge [0600]: Intel Corporation N10 Family DMI Bridge [8086:a000] (rev 02) 00:02.0 VGA compatible controller [0300]: Intel Corporation N10 Family Integrated Graphics Controller [8086:a001] (rev 02) 00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High Definition Audio Controller [8086:27d8] (rev 02) 00:1c.0 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express Port 1 [8086:27d0] (rev 02) 00:1d.0 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 [8086:27c8] (rev 02) 00:1d.1 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 [8086:27c9] (rev 02) 00:1d.2 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 [8086:27ca] (rev 02) 00:1d.3 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 [8086:27cb] (rev 02) 00:1d.7 USB Controller [0c03]: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller [8086:27cc] (rev 02) 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2) 00:1f.0 ISA bridge [0601]: Intel Corporation NM10 Family LPC Controller [8086:27bc] (rev 02) 00:1f.2 IDE interface [0101]: Intel Corporation N10/ICH7 Family SATA IDE Controller [8086:27c0] (rev 02) 00:1f.3 SMBus [0c05]: Intel Corporation N10/ICH 7 Family SMBus Controller [8086:27da] (rev 02) 01:00.0 Ethernet controller [0200]: Atheros Communications Device [1969:1083] (rev c0) sudo lshw description: Desktop Computer product: To Be Filled By O.E.M. (To Be Filled By O.E.M.) vendor: To Be Filled By O.E.M. version: To Be Filled By O.E.M. serial: To Be Filled By O.E.M. width: 64 bits capabilities: smbios-2.6 dmi-2.6 vsyscall64 vsyscall32 configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=00020003-0004-0005-0006-000700080009 *-core description: Motherboard product: AD525PV3 vendor: ASRock physical id: 0 *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: P1.20 date: 04/01/2011 size: 64KiB capacity: 448KiB capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification netboot *-cpu description: CPU product: Intel(R) Atom(TM) CPU D525 @ 1.80GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: Intel(R) Atom(TM) CPU D525 @ 1.80GHz serial: To Be Filled By O.E.M. slot: CPUSocket size: 1800MHz capacity: 1800MHz width: 64 bits clock: 200MHz capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm configuration: cores=2 enabledcores=2 threads=4 *-cache:0 description: L1 cache physical id: 5 slot: L1-Cache size: 48KiB capacity: 48KiB capabilities: internal write-back data *-cache:1 description: L2 cache physical id: 6 slot: L2-Cache size: 1MiB capacity: 1MiB capabilities: internal write-back unified *-memory description: System Memory physical id: c slot: System board or motherboard size: 2GiB *-bank:0 description: SODIMM DDR2 Synchronous 800 MHz (1.2 ns) product: ModulePartNumber00 vendor: Manufacturer00 physical id: 0 serial: SerNum00 slot: DIMM0 size: 2GiB width: 64 bits clock: 800MHz (1.2ns) *-bank:1 description: DIMM [empty] product: ModulePartNumber01 vendor: Manufacturer01 physical id: 1 serial: SerNum01 slot: DIMM1 *-pci description: Host bridge product: N10 Family DMI Bridge vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 02 width: 32 bits clock: 33MHz configuration: driver=agpgart-intel resources: irq:0 *-display description: VGA compatible controller product: N10 Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:41 memory:fea80000-feafffff ioport:dc00(size=8) memory:e0000000-efffffff memory:fe900000-fe9fffff *-multimedia description: Audio device product: N10/ICH 7 Family High Definition Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 02 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=HDA Intel latency=0 resources: irq:43 memory:fea78000-fea7bfff *-pci:0 description: PCI bridge product: N10/ICH 7 Family PCI Express Port 1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: 02 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:40 ioport:e000(size=4096) memory:feb00000-febfffff ioport:80000000(size=2097152) *-network description: Ethernet interface product: Atheros Communications vendor: Atheros Communications physical id: 0 bus info: pci@0000:01:00.0 logical name: eth0 version: c0 serial: XX size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=192.168.1.99 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:42 memory:febc0000-febfffff ioport:ec00(size=128) *-usb:0 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #1 vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:23 ioport:d880(size=32) *-usb:1 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #2 vendor: Intel Corporation physical id: 1d.1 bus info: pci@0000:00:1d.1 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:19 ioport:d800(size=32) *-usb:2 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #3 vendor: Intel Corporation physical id: 1d.2 bus info: pci@0000:00:1d.2 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:18 ioport:d480(size=32) *-usb:3 description: USB Controller product: N10/ICH 7 Family USB UHCI Controller #4 vendor: Intel Corporation physical id: 1d.3 bus info: pci@0000:00:1d.3 version: 02 width: 32 bits clock: 33MHz capabilities: uhci bus_master configuration: driver=uhci_hcd latency=0 resources: irq:16 ioport:d400(size=32) *-usb:4 description: USB Controller product: N10/ICH 7 Family USB2 EHCI Controller vendor: Intel Corporation physical id: 1d.7 bus info: pci@0000:00:1d.7 version: 02 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:23 memory:fea77c00-fea77fff *-pci:1 description: PCI bridge product: 82801 Mobile PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: e2 width: 32 bits clock: 33MHz capabilities: pci subtractive_decode bus_master cap_list *-isa description: ISA bridge product: NM10 Family LPC Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 02 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list configuration: latency=0 *-ide description: IDE interface product: N10/ICH7 Family SATA IDE Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 logical name: scsi0 version: 02 width: 32 bits clock: 66MHz capabilities: ide pm bus_master cap_list emulated configuration: driver=ata_piix latency=0 resources: irq:19 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:ff90(size=16) memory:80200000-802003ff *-disk description: ATA Disk product: WDC WD10TPVT-11U vendor: Western Digital physical id: 0.0.0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: 01.0 serial: WD-WXC1A80P0314 size: 931GiB (1TB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=00088c47 *-volume:0 description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 logical name: /media/private version: 1.0 serial: 042daf2d-350c-4640-a76a-4554c9d98c59 size: 300GiB capacity: 300GiB capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2011-11-06 11:05:03 filesystem=ext4 label=Private lastmountpoint=/media/private modified=2012-04-13 20:01:16 mount.fstype=ext4 mount.options=rw,relatime,barrier=1,stripe=1,data=ordered mounted=2012-04-13 20:01:16 state=mounted *-volume:1 description: Extended partition physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 size: 625GiB capacity: 625GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume:0 description: Linux filesystem partition physical id: 5 logical name: /dev/sda5 logical name: /media/storage capacity: 600GiB configuration: mount.fstype=ext4 mount.options=rw,relatime,barrier=1,stripe=1,data=ordered state=mounted *-logicalvolume:1 description: Linux filesystem partition physical id: 6 logical name: /dev/sda6 logical name: /media/dropbox capacity: 24GiB configuration: mount.fstype=ext4 mount.options=rw,relatime,barrier=1,stripe=1,data=ordered state=mounted *-volume:2 description: EXT4 volume vendor: Linux physical id: 3 bus info: scsi@0:0.0.0,3 logical name: /dev/sda3 logical name: /media/www version: 1.0 serial: 9b0a27b4-05d8-40d5-bfc7-4aeba198db7b size: 2570MiB capacity: 2570MiB capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2011-11-06 11:05:11 filesystem=ext4 label=www lastmountpoint=/media/www modified=2012-04-15 11:31:12 mount.fstype=ext4 mount.options=rw,relatime,barrier=1,stripe=1,data=ordered mounted=2012-04-15 11:31:12 state=mounted *-volume:3 description: Linux swap volume physical id: 4 bus info: scsi@0:0.0.0,4 logical name: /dev/sda4 version: 1 serial: 6ed1130e-3aad-4fa6-890b-77e729121e3b size: 4098MiB capacity: 4098MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-serial UNCLAIMED description: SMBus product: N10/ICH 7 Family SMBus Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 02 width: 32 bits clock: 33MHz configuration: latency=0 resources: ioport:400(size=32) *-scsi physical id: 1 bus info: usb@1:4 logical name: scsi2 capabilities: emulated scsi-host configuration: driver=usb-storage *-disk description: SCSI Disk physical id: 0.0.0 bus info: scsi@2:0.0.0 logical name: /dev/sdb size: 3864MiB (4051MB) capabilities: partitioned partitioned:dos configuration: signature=000b4c55 *-volume description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@2:0.0.0,1 logical name: /dev/sdb1 logical name: / version: 1.0 serial: 33926e39-4685-4f63-b83c-f2a67824b69a size: 3862MiB capacity: 3862MiB capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2011-10-11 14:03:46 filesystem=ext4 lastmountpoint=/ modified=2012-03-19 11:47:29 mount.fstype=ext4 mount.options=rw,noatime,errors=remount-ro,barrier=1,data=ordered mounted=2012-04-15 11:31:11 state=mounted rfkill list all Doesnt show anything! dmesg | grep -i firmware [ 0.715481] pci 0000:00:1f.0: [Firmware Bug]: TigerPoint LPC.BM_STS cleared

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• Dynamically creating a Generic Type at Runtime

  - by Rick Strahl

  I learned something new today. Not uncommon, but it's a core .NET runtime feature I simply did not know although I know I've run into this issue a few times and worked around it in other ways. Today there was no working around it and a few folks on Twitter pointed me in the right direction. The question I ran into is: How do I create a type instance of a generic type when I have dynamically acquired the type at runtime? Yup it's not something that you do everyday, but when you're writing code that parses objects dynamically at runtime it comes up from time to time. In my case it's in the bowels of a custom JSON parser. After some thought triggered by a comment today I realized it would be fairly easy to implement two-way Dictionary parsing for most concrete dictionary types. I could use a custom Dictionary serialization format that serializes as an array of key/value objects. Basically I can use a custom type (that matches the JSON signature) to hold my parsed dictionary data and then add it to the actual dictionary when parsing is complete. Generic Types at Runtime One issue that came up in the process was how to figure out what type the Dictionary<K,V> generic parameters take. Reflection actually makes it fairly easy to figure out generic types at runtime with code like this: if (arrayType.GetInterface("IDictionary") != null) { if (arrayType.IsGenericType) { var keyType = arrayType.GetGenericArguments()[0]; var valueType = arrayType.GetGenericArguments()[1]; … } } The GetArrayType method gets passed a type instance that is the array or array-like object that is rendered in JSON as an array (which includes IList, IDictionary, IDataReader and a few others). In my case the type passed would be something like Dictionary<string, CustomerEntity>. So I know what the parent container class type is. Based on the the container type using it's then possible to use GetGenericTypeArguments() to retrieve all the generic types in sequential order of definition (ie. string, CustomerEntity). That's the easy part. Creating a Generic Type and Providing Generic Parameters at RunTime The next problem is how do I get a concrete type instance for the generic type? I know what the type name and I have a type instance is but it's generic, so how do I get a type reference to keyvaluepair<K,V> that is specific to the keyType and valueType above? Here are a couple of things that come to mind but that don't work (and yes I tried that unsuccessfully first): Type elementType = typeof(keyvalue<keyType, valueType>); Type elementType = typeof(keyvalue<typeof(keyType), typeof(valueType)>); The problem is that this explicit syntax expects a type literal not some dynamic runtime value, so both of the above won't even compile. I turns out the way to create a generic type at runtime is using a fancy bit of syntax that until today I was completely unaware of: Type elementType = typeof(keyvalue<,>).MakeGenericType(keyType, valueType); The key is the type(keyvalue<,>) bit which looks weird at best. It works however and produces a non-generic type reference. You can see the difference between the full generic type and the non-typed (?) generic type in the debugger: The nonGenericType doesn't show any type specialization, while the elementType type shows the string, CustomerEntity (truncated above) in the type name. Once the full type reference exists (elementType) it's then easy to create an instance. In my case the parser parses through the JSON and when it completes parsing the value/object it creates a new keyvalue<T,V> instance. Now that I know the element type that's pretty trivial with: // Objects start out null until we find the opening tag resultObject = Activator.CreateInstance(elementType); Here the result object is picked up by the JSON array parser which creates an instance of the child object (keyvalue<K,V>) and then parses and assigns values from the JSON document using the types  key/value property signature. Internally the parser then takes each individually parsed item and adds it to a list of  List<keyvalue<K,V>> items. Parsing through a Generic type when you only have Runtime Type Information When parsing of the JSON array is done, the List needs to be turned into a defacto Dictionary<K,V>. This should be easy since I know that I'm dealing with an IDictionary, and I know the generic types for the key and value. The problem is again though that this needs to happen at runtime which would mean using several Convert.ChangeType() calls in the code to dynamically cast at runtime. Yuk. In the end I decided the easier and probably only slightly slower way to do this is a to use the dynamic type to collect the items and assign them to avoid all the dynamic casting madness: else if (IsIDictionary) { IDictionary dict = Activator.CreateInstance(arrayType) as IDictionary; foreach (dynamic item in items) { dict.Add(item.key, item.value); } return dict; } This code creates an instance of the generic dictionary type first, then loops through all of my custom keyvalue<K,V> items and assigns them to the actual dictionary. By using Dynamic here I can side step all the explicit type conversions that would be required in the three highlighted areas (not to mention that this nested method doesn't have access to the dictionary item generic types here). Static <- -> Dynamic Dynamic casting in a static language like C# is a bitch to say the least. This is one of the few times when I've cursed static typing and the arcane syntax that's required to coax types into the right format. It works but it's pretty nasty code. If it weren't for dynamic that last bit of code would have been a pretty ugly as well with a bunch of Convert.ChangeType() calls to litter the code. Fortunately this type of type convulsion is rather rare and reserved for system level code. It's not every day that you create a string to object parser after all :-)© Rick Strahl, West Wind Technologies, 2005-2011Posted in .NET  CSharp   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified - works

  - by Matt

  Hello, I am developing a java app (with odbc bridge - forgive me - the only paradox driver I have been able to obtain is the microsoft odbc driver) - which works fine while in eclipse, (and netbeans) - connecting and obtaining data from an ancient paradox 5.x database. So long as it is run from inside my IDE - it compiles and runs flawlessly. When I export it to a runable jar, suddenly [code][Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified[/code] occurs. The jar is being run on the same box as my developing IDE - so I am confused about the cause. It is being run via console from a user account, as per the IDE. My connection string is "jdbc:odbc:Driver={Microsoft Paradox Driver (*.db )};DriverID=538; Fil=Paradox 5.X; DefaultDir=C:\paradox\database\location\" - obtained from connectionstrings.com - and as mentioned before, working fine while run from the IDE. The above seems to 'magically' create its own connection, avoiding the setup of a dsn - I am unsure quite how it does - but it works. The only other thing I can think that might be pertinent is that my PC is a 64bit o/s (windows server 2008). Please help, any suggestions or comments will be greatly appreciated. Thanks, Matt

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• OSX / Kernel extensions: problem locating a driver (that extends IOSCSIPeripheralDeviceType00)

  - by LG

  Hi, I'm implementing a driver that extends IOSCSIPeripheralDeviceType00 as I need to send custom SCSI commands to a device. I'm following the VendorSpecificType00 and SimpleUserClient examples and http://wagerlabs.com/writing-a-mac-osx-usb-device-driver-that-impl as an example. I built my kernel extension and it loads fine with kextload and it shows up in kextstat. The problem is that I can't locate it in my user space code. Here's the important (I think) part of: my driver code: #define super IOSCSIPeripheralDeviceType00 OSDefineMetaClassAndStructors(com_mycompany_driver_Foo, IOSCSIPeripheralDeviceType00) my user client code: #define super IOUserClient OSDefineMetaClassAndStructors(com_mycompany_driver_FooUserClient, IOUserClient) the plist: CFBundleIdentifier -> com.mycompany.driver.Foo IOCLass -> com_mycompany_driver_Foo IOUserClientClass -> com_mycompany_driver_FooUserClient IOProviderClass -> IOSCSIPeripheralDeviceNub Here's how I try to locate the driver in my user space code (similar to SimpleUserClient): dictRef = IOServiceMatching("com_mycompany_driver_Foo"); kernResult = IOServiceGetMatchingServices(kIOMasterPortDefault, dictRef, &iterator); When I execute the code, iterator is 0. I noticed that in the VendorSpecificType00 code, the localization of the driver is done differently: dictRef = IOServiceMatching("IOBlockStorageServices"); kr = IOServiceGetMatchingServices(kIOMasterPortDefault, dictRef, &iter); while ((service = IOIteratorNext(iter))) { io_registry_entry_t parent; kr = IORegistryEntryGetParentEntry(service, kIOServicePlane, &parent); ... // We're only interested in the parent object if it's our driver class. if (IOObjectConformsTo(parent, "com_apple_dts_driver_VendorSpecificType00")) { I tried doing that but it didn't work either. Thanks for reading and your help, -L

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• Cannot find wireless driver for HP laptop

  - by rodey

  I have an HP laptop (model: dv7-1267cl, Windows 7 64-bit Home Premium) and I cannot find the wireless driver for the laptop. I am need of a different version because my wireless connection under Windows is flaky and unreliable. I have problems printing to my wireless printer and logging in to and using several sites like reddit.com, phoenix.edu and facebook.com - I get several "page cannot be displayed" messages while using my wireless connection. I disable my wireless adapter and use an ethernet cable and it all works fine. I also used an Ubuntu Live CD to confirm that there is not a problem with the hardware. This is software/driver issue. The drivers were auto installed by the OS. The Device Manager shows the wireless adapter as Atheros AR5009 802.11 a/g/n WiFi Adapter. I have checked the HP website for my laptop and they do not have wireless drivers listed for that model wireless adapter. I have also checked with atheros.com and I do not see my model adapter on their list of available hardware. Device Manager lists the Hardware ID's for my adapter as: PCI\VEN_168C&DEV_002A&SUBSYS_1381103C&REV_01 PCI\VEN_168C&DEV_002A&SUBSYS_1381103C PCI\VEN_168C&DEV_002A&CC_028000 PCI\VEN_168C&DEV_002A&CC_0280 A search for the first Hardware ID turned up this question from experts-exchange.com. tl;dr A driver does not exist for that model adapter.

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• Can't install graphic drivers in 12.04

  - by yinon

  The driver is ATI/AMD proprietary FGLRX graphics driver. After clicking Activate, it asks for my password and starts downloading. Then it shows an error message: 2012-10-03 16:16:04,227 DEBUG: updating <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> 2012-10-03 16:16:06,172 DEBUG: reading modalias file /lib/modules/3.2.0-29-generic-pae/modules.alias 2012-10-03 16:16:06,383 DEBUG: reading modalias file /usr/share/jockey/modaliases/b43 2012-10-03 16:16:06,386 DEBUG: reading modalias file /usr/share/jockey/modaliases/disable-upstream-nvidia 2012-10-03 16:16:06,456 DEBUG: loading custom handler /usr/share/jockey/handlers/pvr-omap4.py 2012-10-03 16:16:06,506 WARNING: modinfo for module omapdrm_pvr failed: ERROR: modinfo: could not find module omapdrm_pvr 2012-10-03 16:16:06,509 DEBUG: Instantiated Handler subclass __builtin__.PVROmap4Driver from name PVROmap4Driver 2012-10-03 16:16:06,682 DEBUG: PowerVR SGX proprietary graphics driver for OMAP 4 not available 2012-10-03 16:16:06,682 DEBUG: loading custom handler /usr/share/jockey/handlers/cdv.py 2012-10-03 16:16:06,727 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx 2012-10-03 16:16:06,728 DEBUG: Instantiated Handler subclass __builtin__.CdvDriver from name CdvDriver 2012-10-03 16:16:06,728 DEBUG: cdv.available: falling back to default 2012-10-03 16:16:06,772 DEBUG: Intel Cedarview graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,772 DEBUG: loading custom handler /usr/share/jockey/handlers/vmware-client.py 2012-10-03 16:16:06,781 WARNING: modinfo for module vmxnet failed: ERROR: modinfo: could not find module vmxnet 2012-10-03 16:16:06,781 DEBUG: Instantiated Handler subclass __builtin__.VmwareClientHandler from name VmwareClientHandler 2012-10-03 16:16:06,795 DEBUG: VMWare Client Tools availability undetermined, adding to pool 2012-10-03 16:16:06,796 DEBUG: loading custom handler /usr/share/jockey/handlers/fglrx.py 2012-10-03 16:16:06,801 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:06,805 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriverUpdate from name FglrxDriverUpdate 2012-10-03 16:16:06,805 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,833 DEBUG: ATI/AMD proprietary FGLRX graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:06,836 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:06,840 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriver from name FglrxDriver 2012-10-03 16:16:06,840 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,873 DEBUG: ATI/AMD proprietary FGLRX graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,873 DEBUG: loading custom handler /usr/share/jockey/handlers/dvb_usb_firmware.py 2012-10-03 16:16:06,925 DEBUG: Instantiated Handler subclass __builtin__.DvbUsbFirmwareHandler from name DvbUsbFirmwareHandler 2012-10-03 16:16:06,926 DEBUG: Firmware for DVB cards not available 2012-10-03 16:16:06,926 DEBUG: loading custom handler /usr/share/jockey/handlers/nvidia.py 2012-10-03 16:16:06,961 WARNING: modinfo for module nvidia_96 failed: ERROR: modinfo: could not find module nvidia_96 2012-10-03 16:16:06,967 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96 from name NvidiaDriver96 2012-10-03 16:16:06,968 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:06,980 DEBUG: XorgDriverHandler(nvidia_96, nvidia-96, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:06,980 DEBUG: NVIDIA accelerated graphics driver not available 2012-10-03 16:16:06,983 WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current 2012-10-03 16:16:06,987 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrent from name NvidiaDriverCurrent 2012-10-03 16:16:06,987 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,015 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,018 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-10-03 16:16:07,021 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrentUpdates from name NvidiaDriverCurrentUpdates 2012-10-03 16:16:07,022 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,066 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,069 WARNING: modinfo for module nvidia_173_updates failed: ERROR: modinfo: could not find module nvidia_173_updates 2012-10-03 16:16:07,072 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173Updates from name NvidiaDriver173Updates 2012-10-03 16:16:07,073 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,105 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,112 WARNING: modinfo for module nvidia_173 failed: ERROR: modinfo: could not find module nvidia_173 2012-10-03 16:16:07,118 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173 from name NvidiaDriver173 2012-10-03 16:16:07,119 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,159 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,166 WARNING: modinfo for module nvidia_96_updates failed: ERROR: modinfo: could not find module nvidia_96_updates 2012-10-03 16:16:07,171 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96Updates from name NvidiaDriver96Updates 2012-10-03 16:16:07,171 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,188 DEBUG: XorgDriverHandler(nvidia_96_updates, nvidia-96-updates, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:07,188 DEBUG: NVIDIA accelerated graphics driver (post-release updates) not available 2012-10-03 16:16:07,188 DEBUG: loading custom handler /usr/share/jockey/handlers/madwifi.py 2012-10-03 16:16:07,195 WARNING: modinfo for module ath_pci failed: ERROR: modinfo: could not find module ath_pci 2012-10-03 16:16:07,195 DEBUG: Instantiated Handler subclass __builtin__.MadwifiHandler from name MadwifiHandler 2012-10-03 16:16:07,196 DEBUG: Alternate Atheros "madwifi" driver availability undetermined, adding to pool 2012-10-03 16:16:07,196 DEBUG: loading custom handler /usr/share/jockey/handlers/sl_modem.py 2012-10-03 16:16:07,213 DEBUG: Instantiated Handler subclass __builtin__.SlModem from name SlModem 2012-10-03 16:16:07,234 DEBUG: Software modem not available 2012-10-03 16:16:07,234 DEBUG: loading custom handler /usr/share/jockey/handlers/broadcom_wl.py 2012-10-03 16:16:07,239 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl 2012-10-03 16:16:07,277 DEBUG: Instantiated Handler subclass __builtin__.BroadcomWLHandler from name BroadcomWLHandler 2012-10-03 16:16:07,277 DEBUG: Broadcom STA wireless driver availability undetermined, adding to pool 2012-10-03 16:16:07,278 DEBUG: all custom handlers loaded 2012-10-03 16:16:07,278 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027D8sv00001043sd000082EAbc04sc03i00') 2012-10-03 16:16:07,568 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0000v0000p0000e0000-e0,5,kramlsfw6,') 2012-10-03 16:16:07,704 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,704 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,704 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027DAsv00001043sd00008179bc0Csc05i00') 2012-10-03 16:16:07,707 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801'} 2012-10-03 16:16:07,707 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C01:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0B00:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001969d00001026sv00001043sd00008304bc02sc00i00') 2012-10-03 16:16:07,710 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'atl1e'} 2012-10-03 16:16:07,710 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'atl1e', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,710 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0003v04F2p0816e0111-e0,1,4,11,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8C,8E,96,98,9E,9F,A1,A3,A4,A5,A6,AD,B0,B1,B2,B3,B4,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,F0,ram4,l0,1,2,sfw') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:pcspkr') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp'} 2012-10-03 16:16:07,712 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v1D6Bp0001d0302dc09dsc00dp00ic09isc00ip00') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0019v0000p0001e0000-e0,1,k74,ramlsfw') 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C04:') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:eisa') 2012-10-03 16:16:07,725 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027CCsv00001043sd00008179bc0Csc03i20') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:Fixed MDIO bus') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000029C0sv00001043sd000082B0bc06sc00i00') 2012-10-03 16:16:07,731 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v045Ep0766d0101dcEFdsc02dp01ic01isc01ip00') 2012-10-03 16:16:07,777 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio'} 2012-10-03 16:16:07,777 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0F03:PNP0F13:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0000:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001002d000095C5sv0000174Bsd0000E400bc03sc00i00') 2012-10-03 16:16:08,072 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx_updates', 'package': 'fglrx-updates'} 2012-10-03 16:16:08,133 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,134 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,072 DEBUG: found match in handler pool xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,136 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:08,147 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,173 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,173 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,162 DEBUG: got handler xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,173 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx', 'package': 'fglrx'} 2012-10-03 16:16:08,184 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,184 DEBUG: fglrx is not the alternative in use 2012-10-03 16:16:08,173 DEBUG: found match in handler pool xorg:fglrx([FglrxDriver, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver) 2012-10-03 16:16:08,187 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:08,190 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,216 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None . . . 2012-10-03 16:18:10,552 DEBUG: install progress initramfs-tools 62.500000 2012-10-03 16:18:22,249 DEBUG: install progress libc-bin 62.500000 2012-10-03 16:18:23,251 DEBUG: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,256 ERROR: Package failed to install: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,590 WARNING: /sys/module/fglrx_updates/drivers does not exist, cannot rebind fglrx_updates driver 2012-10-03 16:18:43,601 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,601 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:43,617 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,617 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,143 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,144 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,154 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,154 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,182 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,182 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:54,215 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,215 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,229 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,229 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,268 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,268 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,279 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,279 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,298 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,298 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:57,828 DEBUG: Shutting down I don't know how to troubleshoot from looking at the log file, could somebody assist me with this please? You can download the log file at: https://www.dropbox.com/s/a59d2hyabo02q5z/jockey.log

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• Menu bars are a basic light gray after installing graphics card driver. [closed]

  - by Jonathan

  Possible Duplicate: Desktop forgets theme? Hi, I've just installed Ubuntu 10.10 64-bit. It came up saying I could install 2 proprietary drivers, one for my WiFi adapter (which works perfectly) and one for my graphics card - a Sapphire AIT Radeon HD 5770 1024MB GDDR5 PCI-Express Graphics Card. The driver is called ATI/AMD proprietary FGLRX graphics driver. Before installing this driver I was unable to have Extra Visual Effects in Appearances. However after installing (and restarting) the menu bars are now in a basic light gray mode, rather than the sleek Ubuntu black. - Although Extra Visual Effects does now work. I've tried rebooting, and I've had a look around in ATI "Catalyst Control Center" but nothing has worked so far. Does anybody know what this windows mode is, how to change it back to normal and why it's doing it in the first place? Below is a screenshot of my computer: (This is also the first time I've installed Ubuntu on my computer, and am keen for it to work.)

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• Driver Scanner detect driver needed

  - by Pennf0lio

  Hi, I'm currently fixing the laptop of my friend. Her Laptop is kinda old and is not a well know brand (Redfox Navigator), So that means there are lack of support online. Are there Software that you install and will scan the system and will look for the driver that it needs? Note: The Laptop can't connect through the internet. thanks!

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• Nivida driver install

  - by Adham

  tried black listing and every thing i could find on the internet used with root and alt+ctrl+f1 with no solution nvidia-installer log file '/var/log/nvidia-installer.log' creation time: Mon Jun 17 08:35:25 2013 installer version: 319.23 PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin nvidia-installer command line: ./nvidia-installer Using: nvidia-installer ncurses user interface -> License accepted. -> Installing NVIDIA driver version 319.23. -> Running distribution scripts executing: '/usr/lib/nvidia/pre-install'... -> done. -> The distribution-provided pre-install script failed! Continue installation anyway? (Answer: Yes) ERROR: The Nouveau kernel driver is currently in use by your system. This driver is incompatible with the NVIDIA driver, and must be disabled before proceeding. Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver. WARNING: One or more modprobe configuration files to disable Nouveau are already present at: /etc/modprobe.d/nvidia-installer-disable-nouveau.conf. Please be sure you have rebooted your system since these files were written. If you have rebooted, then Nouveau may be enabled for other reasons, such as being included in the system initial ramdisk or in your X configuration file. Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver. ERROR: Installation has failed. Please see the file '/var/log/nvidia-installer.log' for details. You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.

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• Multi Monitor Setup Problems

  - by Shamballa

  I have Ubuntu 10.04 LTS - the Lucid Lynx. I have until recently been using a nVida Graphics card (NVIDIA GeForce 9800 GT) with two monitors attached, this all worked fine and dandy. A couple of days ago I bought two new identical LCD monitors for a multi monitor setup and two ATI graphics cards (ATI Sapphire Radeon HD5450). NOTE *All monitors work fine in Windows XP, 2k, Vista and 7 After I had booted into Ubuntu only one display came on, that I kind of expected anyway, then I removed the driver for the nVidia card and downloaded the ATI version which gave me the ATI Catalyst Control Center - in that only two of the displays were showing the third was disabled and showing unknown driver. I enabled the third monitor that stated "Unkown Driver" and had to reboot, upon reboot none of the displays work. I restarted and booted up into recovery mode and from now that is only what I can get into using a failsafe driver. It seems according to the log that a server is already active for Display 0 and I have to remove /tmp/.X0-lock and start again. This is what the log file is saying: Fatal Server Error Server is already active for display 0 if this server is no longer running, remove /tmp/.X0-lock and start again. (WW) xf86 closeconsole: KDSETMODE failed: Bad file descriptor (WW) xf86 closeconsole: VT_GETMODE failed: Bad file descriptor (WW) xf86 closeconsole: VT_GETSTATE failed: Bad file descriptor ddxSigGiveUp: closing log I have tried looking at my xorg.config file but unfortunately I have not really got a clue as to how it "should" be - I have tried regenerating it using this command from a terminal: sudo dpkg-reconfigure -phigh xserver-xorg but that had no effect so I am currently stuck in failsafe driver mode but two monitors are active but are mirroring each other. I hope that this is not to long - looking back I have been going on a bit! but I am just trying to explain as much as I can... I have asked this on Linuxquestions but nobody seems to know either or at least I have not had any responses. Could some kind soul please help explain what I can do from here? I would be eternally grateful. Chris * Update * Removing xorg.conf does nothing other than allowing me to use only two monitors - using the command: sudo aticonfig --initial generates the xorg.conf file below: but does not work either - I just get two monitors... Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 EndSection Section "Files" EndSection Section "Module" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]-0" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Device" Identifier "aticonfig-Device[0]-0" Driver "fglrx" BusID "PCI:1:0:0" EndSection Section "Screen" Identifier "aticonfig-Screen[0]-0" Device "aticonfig-Device[0]-0" Monitor "aticonfig-Monitor[0]-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection I have tried using this command from a thread on the Ubuntu Forums with a question similar to mine: sudo aticonfig --initial=dual-head --adapter=all Generated xorg.conf file Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 Screen "aticonfig-Screen[0]-1" RightOf "aticonfig-Screen[0]-0" Screen "aticonfig-Screen[1]-0" RightOf "aticonfig-Screen[0]-1" Screen "aticonfig-Screen[1]-1" RightOf "aticonfig-Screen[1]-0" EndSection Section "Files" EndSection Section "Module" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]-0" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]-1" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Monitor" Identifier "aticonfig-Monitor[1]-0" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Monitor" Identifier "aticonfig-Monitor[1]-1" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Device" Identifier "aticonfig-Device[0]-0" Driver "fglrx" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "aticonfig-Device[0]-1" Driver "fglrx" BusID "PCI:1:0:0" Screen 1 EndSection Section "Device" Identifier "aticonfig-Device[1]-0" Driver "fglrx" BusID "PCI:2:0:0" EndSection Section "Device" Identifier "aticonfig-Device[1]-1" Driver "fglrx" BusID "PCI:2:0:0" Screen 1 EndSection Section "Screen" Identifier "aticonfig-Screen[0]-0" Device "aticonfig-Device[0]-0" Monitor "aticonfig-Monitor[0]-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "aticonfig-Screen[0]-1" Device "aticonfig-Device[0]-1" Monitor "aticonfig-Monitor[0]-1" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "aticonfig-Screen[1]-0" Device "aticonfig-Device[1]-0" Monitor "aticonfig-Monitor[1]-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "aticonfig-Screen[1]-1" Device "aticonfig-Device[1]-1" Monitor "aticonfig-Monitor[1]-1" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection This upon reboot renders ALL monitors blank and I have to go into recovery mode and use a failsafe driver. This is so much harder than I thought it would be, I don't think Ubuntu likes ATI for multi (3) monitors or maybe the other way around. Can anyone help still?

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• some files just wont install- linux-image-3.5.0-42-generic

  - by jatin

  It gives the following details of the package operation failing after using the sofware updater on 12.10: installArchives() failed: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Preconfiguring packages ... perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Preconfiguring packages ... perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Preconfiguring packages ... perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Preconfiguring packages ... (Reading database ... (Reading database ... 217566 files and directories currently installed.) Preparing to replace linux-image-3.5.0-36-generic 3.5.0-36.57~precise1 (using .../linux-image-3.5.0-36-generic_3.5.0-36.57_amd64.deb) ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Done. Unpacking replacement linux-image-3.5.0-36-generic ... dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-36-generic_3.5.0-36.57_amd64.deb (--unpack): unable to make backup link of `./boot/System.map-3.5.0-36-generic' before installing new version: Operation not permitted No apport report written because MaxReports is reached already dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.5.0-36-generic /boot/vmlinuz-3.5.0-36-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.5.0-36-generic /boot/vmlinuz-3.5.0-36-generic Preparing to replace linux-image-3.5.0-42-generic 3.5.0-42.65~precise1 (using .../linux-image-3.5.0-42-generic_3.5.0-42.65_amd64.deb) ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Done. Unpacking replacement linux-image-3.5.0-42-generic ... dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-42-generic_3.5.0-42.65_amd64.deb (--unpack): unable to make backup link of `./boot/System.map-3.5.0-42-generic' before installing new version: Operation not permitted No apport report written because MaxReports is reached already Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.5.0-42-generic /boot/vmlinuz-3.5.0-42-generic dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.5.0-42-generic /boot/vmlinuz-3.5.0-42-generic Preparing to replace memtest86+ 4.20-1.1ubuntu1 (using .../memtest86+_4.20-1.1ubuntu2.1_amd64.deb) ... Unpacking replacement memtest86+ ... dpkg: error processing /var/cache/apt/archives/memtest86+_4.20-1.1ubuntu2.1_amd64.deb (--unpack): unable to make backup link of `./boot/memtest86+.bin' before installing new version: Operation not permitted No apport report written because MaxReports is reached already locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.5.0-36-generic_3.5.0-36.57_amd64.deb /var/cache/apt/archives/linux-image-3.5.0-42-generic_3.5.0-42.65_amd64.deb /var/cache/apt/archives/memtest86+_4.20-1.1ubuntu2.1_amd64.deb Error in function: Output of df -h: Filesystem Size Used Avail Use% Mounted on /dev/sda6 38G 6.5G 30G 19% / udev 3.5G 4.0K 3.5G 1% /dev tmpfs 1.5G 924K 1.5G 1% /run none 5.0M 4.0K 5.0M 1% /run/lock none 3.6G 296K 3.6G 1% /run/shm none 100M 64K 100M 1% /run/user /dev/sda1 197M 87M 111M 44% /boot /dev/sda5 243G 971M 230G 1% /home

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• Ubuntu 12.10 - Resolution stuck at 1024x768 using Open Source Radeon Driver

  - by mumble

  I'm using Ubuntu 12.10 with an ATI Radeon HD5670 card. I currently have the open source xorg-edgers driver. I've been using this driver interchangeably with the Radeon open source driver since fglrx seems to give me a lot of freezes. So I can't really use proprietary drivers, the Radeon driver seems to be stable for me, the resolution is the only problem. The resolution is stuck at 1024x768, where my monitor's native resolution is 1366x768. How do I enable that resolution? Going to System Settings Display only gives me 800x600 and 1024x768 by the way. And just another question, how do I know if xorg-edgers driver is enabled? When I run sudo lshw -c video, I still see the radeon driver. configuration: driver=radeon latency=0 Thanks a lot in advance!

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• notification from additional driver

  - by MAHESH

  today i installed ubuntu 11.10 in my HP laptop well everything goes well installation and updates. i get notification on task bar from additional driver No propritery drivers are in use on this system i will elaborate what i seen on the screen proprietry driver do not have public source code that ubuntu developer are free to modify security updates and correction depend solely on the respnsiveness of the manufacture ubuntu cannot fix or improve these drivers. ATI/AMD proprietry FGLRX graphic driver( post release update) 2.ATI/AMD proprietry FGLRX graphic driver ATI/AMD propreitry FGLRX graphics driver(post release update) tested by ubuntu developers License propreitry 3D accelerated propreitry graphic drivers for ATI cards. This driver is required to fully utilise the 3D potential of some ATI graphic and as well as provide 2D accelerate newer card. guys do i need to active this driver in order to accomplish the complete installation. your response will be greatful

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• WCF: Serializing and Deserializing generic collections

  - by Fabiano

  I have a class Team that holds a generic list: [DataContract(Name = "TeamDTO", IsReference = true)] public class Team { [DataMember] private IList<Person> members = new List<Person>(); public Team() { Init(); } private void Init() { members = new List<Person>(); } [System.Runtime.Serialization.OnDeserializing] protected void OnDeserializing(StreamingContext ctx) { Log("OnDeserializing of Team called"); Init(); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnSerializing] private void OnSerializing(StreamingContext ctx) { Log("OnSerializing of Team called"); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnDeserialized] protected void OnDeserialized(StreamingContext ctx) { Log("OnDeserialized of Team called"); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnSerialized] private void OnSerialized(StreamingContext ctx) { Log("OnSerialized of Team called"); Log(members.ToString()); } When I use this class in a WCF service, I get following log output OnSerializing of Team called System.Collections.Generic.List 1[Person] OnSerialized of Team called System.Collections.Generic.List 1[Person] OnDeserializing of Team called System.Collections.Generic.List 1[ENetLogic.ENetPerson.Model.FirstPartyPerson] OnDeserialized of Team called ENetLogic.ENetPerson.Model.Person[] After the deserialization members is an Array and no longer a generic list although the field type is IList< (?!) When I try to send this object back over the WCF service I get the log output OnSerializing of Team called ENetLogic.ENetPerson.Model.FirstPartyPerson[] After this my unit test crashes with a System.ExecutionEngineException, which means the WCF service is not able to serialize the array. (maybe because it expected a IList<) So, my question is: Does anybody know why the type of my IList< is an array after deserializing and why I can't serialize my Team object any longer after that? Thanks

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• How to check if a generic type definition inherits from another generic type definition

  - by Anne

  I'm trying to check whether an open generic type definition implements some open generic interface. Look at the sample below: public interface IService<T> { } public class ServiceImpl<T> : IService<T> { } private static bool OpenGenericTypeImplementsOpenGenericInterface( Type derivedType, Type interfaceType) { return derivedType.GetInterfaces().Contains(interfaceType); } [TestMethod] public void Verify() { Type openGenericImplementation = typeof(ServiceImpl<>); Type expectedInterfaceType = typeof(IService<>); bool implDoesImplementInterface = OpenGenericTypeImplementsOpenGenericInterface( openGenericImplementation, expectedInterfaceType); // This assert fails. Why? Assert.IsTrue(implDoesImplementInterface); } I found out that the returned type from the Type.GetInterfaces() method does not match the type returned from typeof(IService<>). I can't figure out why that is and how to correctly validate whether some generic type definition inherits or implements some other generic type definition. What's going on here and how do I solve fix this problem?

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• 'Generic' ViewModel

  - by Ian MacPherson

  Using EF 4, I have several subtypes of a 'Business' entity (customers, suppliers, haulage companies etc). They DO need to be subtypes. I am building a general viewmodel which calls into a service from which a generic repository is accessed. As I have 4 subtypes, it would be good to have a 'generic' viewmodel used for all of these. Problem is of course is that I have to call a specific type into my generic repository, for example: BusinessToRetrieve = _repository .LoadEntity<Customer>(o => o.CustomerID == customerID); It would be good to be able to call <SomethingElse>, somethingElse being one or other of the subtypes), otherwise I shall have to create 4 near identical viemodels, which seems a waste of course! The subtype entity name is available to the viewmodel but I've been unable to figure out how to make the above call convert this into a type. An issue with achieving what I want is that presumably the lambda expression being passed in wouldn't be able to resolve on a 'generic' call ?

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• Django generic relation field reports that all() is getting unexpected keyword argument when no args

  - by Joshua

  I have a model which can be attached to to other models. class Attachable(models.Model): content_type = models.ForeignKey(ContentType) object_pk = models.TextField() content_object = generic.GenericForeignKey(ct_field="content_type", fk_field="object_pk") class Meta: abstract = True class Flag(Attachable): user = models.ForeignKey(User) flag = models.SlugField() timestamp = models.DateTimeField() I'm creating a generic relationship to this model in another model. flags = generic.GenericRelation(Flag) I try to get objects from this generic relation like so: self.flags.all() This results in the following exception: >>> obj.flags.all() Traceback (most recent call last): File "<console>", line 1, in <module> File "/usr/local/lib/python2.6/dist-packages/django/db/models/manager.py", line 105, in all return self.get_query_set() File "/usr/local/lib/python2.6/dist-packages/django/contrib/contenttypes/generic.py", line 252, in get_query_set return superclass.get_query_set(self).filter(**query) File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 498, in filter return self._filter_or_exclude(False, *args, **kwargs) File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 516, in _filter_or_exclude clone.query.add_q(Q(*args, **kwargs)) File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/query.py", line 1675, in add_q can_reuse=used_aliases) File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/query.py", line 1569, in add_filter negate=negate, process_extras=process_extras) File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/query.py", line 1737, in setup_joins "Choices are: %s" % (name, ", ".join(names))) FieldError: Cannot resolve keyword 'object_id' into field. Choices are: content_type, flag, id, nestablecomment, object_pk, timestamp, user >>> obj.flags.all(object_pk=obj.pk) Traceback (most recent call last): File "<console>", line 1, in <module> TypeError: all() got an unexpected keyword argument 'object_pk' What have I done wrong?

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• When/Why ( if ever ) should i think about doing Generic Programming/Meta Programming

  - by hotadvice

  Hi there IMHO to me OOPS, design patterns make sense and i have been able to apply them practically. But when it comes to "generic programming /meta programming" of the Modern C++ kind, i am left confused. -- Is it a new programming/design paradigm ? -- Is it just limited to "library development"? If not, What design/coding situations call for using meta programming/generic programming. -- Does using templates mean i am doing generic programming? I have googled a lot on this topic but do not grasp the BIG PICTURE fully. Also see this post. After reading dicussions here under, up till now, I am sure ( might still not be correct): a) Generic programming and meta programming are two different concepts.

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• How to get rid of grub menu after boot?

  - by umpirsky

  Here is my /etc/default/grub: # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_LINUX_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" I tried various things including: How do I hide the GRUB menu showing up in the beginning of boot? How to disable Grub's menu from showing up after failed boot http://www.itworld.com/software/306238/disable-grub-boot-menu-ubuntu-1210 But I still get grub menu each time I boot. My generated /boot/grub/grub.cfg: # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi if [ "${next_entry}" ] ; then set default="${next_entry}" set next_entry= save_env next_entry set boot_once=true else set default="0" fi if [ x"${feature_menuentry_id}" = xy ]; then menuentry_id_option="--id" else menuentry_id_option="" fi export menuentry_id_option if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { if [ x$feature_all_video_module = xy ]; then insmod all_video else insmod efi_gop insmod efi_uga insmod ieee1275_fb insmod vbe insmod vga insmod video_bochs insmod video_cirrus fi } if [ x$feature_default_font_path = xy ] ; then font=unicode else insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi font="/usr/share/grub/unicode.pf2" fi if loadfont $font ; then set gfxmode=auto load_video insmod gfxterm set locale_dir=$prefix/locale set lang=en_US insmod gettext fi terminal_output gfxterm if [ "${recordfail}" = 1 ] ; then set timeout=-1 else if [ x$feature_timeout_style = xy ] ; then set timeout_style=hidden set timeout=0 # Fallback hidden-timeout code in case the timeout_style feature is # unavailable. elif sleep --interruptible 0 ; then set timeout=0 fi fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray if background_color 45,51,53; then clear fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" if [ "${1}" = "keep" ]; then set vt_handoff=vt.handoff=7 else set vt_handoff= fi } if [ "${recordfail}" != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-ed6b32bc-ec1d-444c-a000-282fddd6d460' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro quiet splash $vt_handoff initrd /boot/initrd.img-3.13.0-29-generic } submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-ed6b32bc-ec1d-444c-a000-282fddd6d460' { menuentry 'Ubuntu, with Linux 3.13.0-29-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-advanced-ed6b32bc-ec1d-444c-a000-282fddd6d460' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi echo 'Loading Linux 3.13.0-29-generic ...' linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro quiet splash $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.13.0-29-generic } menuentry 'Ubuntu, with Linux 3.13.0-29-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-29-generic-recovery-ed6b32bc-ec1d-444c-a000-282fddd6d460' { recordfail load_video insmod gzio insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi echo 'Loading Linux 3.13.0-29-generic ...' linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.13.0-29-generic } menuentry 'Ubuntu, with Linux 3.13.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-advanced-ed6b32bc-ec1d-444c-a000-282fddd6d460' { recordfail load_video gfxmode $linux_gfx_mode insmod gzio insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi echo 'Loading Linux 3.13.0-24-generic ...' linux /boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro quiet splash $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.13.0-24-generic } menuentry 'Ubuntu, with Linux 3.13.0-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-24-generic-recovery-ed6b32bc-ec1d-444c-a000-282fddd6d460' { recordfail load_video insmod gzio insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi echo 'Loading Linux 3.13.0-24-generic ...' linux /boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.13.0-24-generic } } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry 'Ubuntu 14.04 LTS (14.04) (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro splash quiet quiet splash $vt_handoff initrd /boot/initrd.img-3.13.0-29-generic } submenu 'Advanced options for Ubuntu 14.04 LTS (14.04) (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' $menuentry_id_option 'osprober-gnulinux-advanced-ed6b32bc-ec1d-444c-a000-282fddd6d460' { menuentry 'Ubuntu (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-3.13.0-29-generic.efi.signed--ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro splash quiet quiet splash $vt_handoff initrd /boot/initrd.img-3.13.0-29-generic } menuentry 'Ubuntu, with Linux 3.13.0-29-generic (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-3.13.0-29-generic.efi.signed--ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro splash quiet quiet splash $vt_handoff initrd /boot/initrd.img-3.13.0-29-generic } menuentry 'Ubuntu, with Linux 3.13.0-29-generic (recovery mode) (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-3.13.0-29-generic.efi.signed-root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset splash quiet-ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset splash quiet initrd /boot/initrd.img-3.13.0-29-generic } menuentry 'Ubuntu, with Linux 3.13.0-24-generic (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-3.13.0-24-generic.efi.signed--ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro splash quiet quiet splash $vt_handoff initrd /boot/initrd.img-3.13.0-24-generic } menuentry 'Ubuntu, with Linux 3.13.0-24-generic (recovery mode) (on /dev/mapper/isw_beaaegcdjh_ASUS_OS2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-3.13.0-24-generic.efi.signed-root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset splash quiet-ed6b32bc-ec1d-444c-a000-282fddd6d460' { insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 else search --no-floppy --fs-uuid --set=root ed6b32bc-ec1d-444c-a000-282fddd6d460 fi linux /boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=ed6b32bc-ec1d-444c-a000-282fddd6d460 ro recovery nomodeset splash quiet initrd /boot/initrd.img-3.13.0-24-generic } } set timeout_style=menu if [ "${timeout}" = 0 ]; then set timeout=10 fi ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/30_uefi-firmware ### menuentry 'System setup' $menuentry_id_option 'uefi-firmware' { fwsetup } ### END /etc/grub.d/30_uefi-firmware ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ###

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• Network driver for Hyper-V restore from Windows Home Server

  - by Philipp Schmid

  I have backed up Windows Server 2008 running virtualized on Hyper-V to a Windows Home Server 2008 SP1 (I know I should have backed up the VHD instead). Now I need to restore the contents of the VM from WHS. I have created a restore CD ISO and used it to create a new VM. It all works as advertised up to the point where the restore process wants to load the network drivers (it only finds 4 disk drivers on the restore CD. but no network drivers). So I created a virtual floppy and copied the contents of 'Home Server Drivers for Restore onto it. But no luck! I have tried moving the 4 subdirectories into the root of the floppy, but that didn't work either. Finally, I started another instance of the WS 2008 to identify the network driver that the virtualized instance is using (%WINDOWS%\system32\drivers\netvsc60.sys) and copied that file onto the virtual floppy, without success. Does anyone have any suggestions on how to get networking working on a Hyper-V instance running off the Windows Home Server Restore CD? UPDATE: As suggested by delenda, I have added a legacy network adapter to my VM, and indeed I now get a network driver listed! However, the WHS it still not found, even after entering the home server name manually. PHS

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• Dynamic Code for type casting Generic Types 'generically' in C#

  - by Rick Strahl

  C# is a strongly typed language and while that's a fundamental feature of the language there are more and more situations where dynamic types make a lot of sense. I've written quite a bit about how I use dynamic for creating new type extensions: Dynamic Types and DynamicObject References in C# Creating a dynamic, extensible C# Expando Object Creating a dynamic DataReader for dynamic Property Access Today I want to point out an example of a much simpler usage for dynamic that I use occasionally to get around potential static typing issues in C# code especially those concerning generic types. TypeCasting Generics Generic types have been around since .NET 2.0 I've run into a number of situations in the past - especially with generic types that don't implement specific interfaces that can be cast to - where I've been unable to properly cast an object when it's passed to a method or assigned to a property. Granted often this can be a sign of bad design, but in at least some situations the code that needs to be integrated is not under my control so I have to make due with what's available or the parent object is too complex or intermingled to be easily refactored to a new usage scenario. Here's an example that I ran into in my own RazorHosting library - so I have really no excuse, but I also don't see another clean way around it in this case. A Generic Example Imagine I've implemented a generic type like this: public class RazorEngine<TBaseTemplateType> where TBaseTemplateType : RazorTemplateBase, new() You can now happily instantiate new generic versions of this type with custom template bases or even a non-generic version which is implemented like this: public class RazorEngine : RazorEngine<RazorTemplateBase> { public RazorEngine() : base() { } } To instantiate one: var engine = new RazorEngine<MyCustomRazorTemplate>(); Now imagine that the template class receives a reference to the engine when it's instantiated. This code is fired as part of the Engine pipeline when it gets ready to execute the template. It instantiates the template and assigns itself to the template: var template = new TBaseTemplateType() { Engine = this } The problem here is that possibly many variations of RazorEngine<T> can be passed. I can have RazorTemplateBase, RazorFolderHostTemplateBase, CustomRazorTemplateBase etc. as generic parameters and the Engine property has to reflect that somehow. So, how would I cast that? My first inclination was to use an interface on the engine class and then cast to the interface.  Generally that works, but unfortunately here the engine class is generic and has a few members that require the template type in the member signatures. So while I certainly can implement an interface: public interface IRazorEngine<TBaseTemplateType> it doesn't really help for passing this generically templated object to the template class - I still can't cast it if multiple differently typed versions of the generic type could be passed. I have the exact same issue in that I can't specify a 'generic' generic parameter, since there's no underlying base type that's common. In light of this I decided on using object and the following syntax for the property (and the same would be true for a method parameter): public class RazorTemplateBase :MarshalByRefObject,IDisposable { public object Engine {get;set; } } Now because the Engine property is a non-typed object, when I need to do something with this value, I still have no way to cast it explicitly. What I really would need is: public RazorEngine<> Engine { get; set; } but that's not possible. Dynamic to the Rescue Luckily with the dynamic type this sort of thing can be mitigated fairly easily. For example here's a method that uses the Engine property and uses the well known class interface by simply casting the plain object reference to dynamic and then firing away on the properties and methods of the base template class that are common to all templates:/// <summary> /// Allows rendering a dynamic template from a string template /// passing in a model. This is like rendering a partial /// but providing the input as a /// </summary> public virtual string RenderTemplate(string template,object model) { if (template == null) return string.Empty; // if there's no template markup if(!template.Contains("@")) return template; // use dynamic to get around generic type casting dynamic engine = Engine; string result = engine.RenderTemplate(template, model); if (result == null) throw new ApplicationException("RenderTemplate failed: " + engine.ErrorMessage); return result; } Prior to .NET 4.0  I would have had to use Reflection for this sort of thing which would have a been a heck of a lot more verbose, but dynamic makes this so much easier and cleaner and in this case at least the overhead is negliable since it's a single dynamic operation on an otherwise very complex operation call. Dynamic as  a Bailout Sometimes this sort of thing often reeks of a design flaw, and I agree that in hindsight this could have been designed differently. But as is often the case this particular scenario wasn't planned for originally and removing the generic signatures from the base type would break a ton of other code in the framework. Given the existing fairly complex engine design, refactoring an interface to remove generic types just to make this particular code work would have been overkill. Instead dynamic provides a nice and simple and relatively clean solution. Now if there were many other places where this occurs I would probably consider reworking the code to make this cleaner but given this isolated instance and relatively low profile operation use of dynamic seems a valid choice for me. This solution really works anywhere where you might end up with an inheritance structure that doesn't have a common base or interface that is sufficient. In the example above I know what I'm getting but there's no common base type that I can cast to. All that said, it's a good idea to think about use of dynamic before you rush in. In many situations there are alternatives that can still work with static typing. Dynamic definitely has some overhead compared to direct static access of objects, so if possible we should definitely stick to static typing. In the example above the application already uses dynamics extensively for dynamic page page templating and passing models around so introducing dynamics here has very little additional overhead. The operation itself also fires of a fairly resource heavy operation where the overhead of a couple of dynamic member accesses are not a performance issue. So, what's your experience with dynamic as a bailout mechanism? © Rick Strahl, West Wind Technologies, 2005-2012Posted in CSharp   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• Where to find gtx560Ti driver for ubuntu 12.04?

  - by sam

  I found in this nvidia link : http://www.nvidia.com/object/linux-display-amd64-295.59-driver.html It says Linux x64 (AMD64/EM64T) Display Driver Version: 295.59 Certified Supported: NVS 5400M NVS 310 Quadro 410 GeForce GT 620M GeForce GT 640M GeForce GT 640M LE GeForce GT 650M GeForce GTX 660M GeForce GTX 670M GeForce GTX 675M GeForce GTX 555 GeForce GTX 560 SE GeForce GT 415 GeForce GTX 460 v2 Is that driver support for gtx560Ti? If not ,where is the proper driver? (I don't want to use the driver in ubuntu settings) Thank you~

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• Ubuntu 12.04 + AMD Radeon driver 12.8 problem

  - by wpinacz

  I have a Lenovo G570 laptop with AMD Radeon 6370M GPU. I wanted to install new 12.8 driver from AMD but with no success, after install and reboot, I got a screen with reconfigure graphics driver and it won't work. If I install 12.6 driver it works but I cannot switch to my integrated Intel GPU, only discrete (AMD) GPU is working. Please help with my problem (installing 12.8 driver or switching GPU under 12.6 driver).

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