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• How can I use target mode in Linux with USB?

  - by dash17291

  Kernel 3.5 introduces: This release includes a driver for using an IEEE-1394 connection as a SCSI transport. This enables to expose SCSI devices to other nodes on the Firewire bus, for example hard disk drives. It's a similar functionality to Firewire Target Disk Mode on many Apple computers. This release also adds a usb-gadget driver that does the same with USB. The driver supports two USB protocols are supported that is BBB or BOT (Bulk Only Transport) and UAS (USB Attached SCSI). BOT is advertised on alternative interface 0 (primary) and UAS is on alternative interface 1. Both protocols can work on USB 2.0 and USB 3.0. UAS utilizes the USB 3.0 feature called streams support. http://kernelnewbies.org/Linux_3.5 I have an Arch Linux with kernel 3.5.3-1 and wanna try out this feature.

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• How to find out if a Java ResultSet obtained is empty?

  - by Bruce

  Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:userdata.db"); Statement stat = conn.createStatement(); ResultSet rs = stat.executeQuery("SELECT * from table WHERE is_query_processed = 0;"); How can I find out if rs is empty?

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• Is there a (free or commercial) print server which print PDFs from networks?

  - by Eonil

  I'm working in office which uses Windows server for printing. Because our printer supports only Windows driver. But here are Mac OS X also which requires network printing... I'm sure there is no driver of the printer for Mac. So I figured out an idea to do this. On the Mac, a virtual printer driver generates and sends PDF file to print server. Print server, prints PDF files with it's local printer. Is there a solution can do this? (free or commercial)

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• Changes to data inside class not being shown when accessed from outside class.

  - by Hypatia

  I have two classes, Car and Person. Car has as one of its members an instance of Person, driver. I want to move a car, while keeping track of its location, and also move the driver inside the car and get its location. However, while this works from inside the class (I have printed out the values as they are calculated), when I try to access the data from main, there's nothing there. I.e. the array position[] ends up empty. I am wondering if there is something wrong with the way I have set up the classes -- could it be a problem of the scope of the object? I have tried simplifying the code so that I only give what is necessary. Hopefully that covers everything that you would need to see. The constructer Car() fills the offset array of driver with nonzero values. class Car{ public: Container(float=0,float=0,float=0); ~Container(); void move(float); void getPosition(float[]); void getDriverPosition(float[]); private: float position[3]; Person driver; float heading; float velocity; }; class Person{ public: Person(float=0,float=0,float=0); ~Person(); void setOffset(float=0,float=0,float=0); void setPosition(float=0,float=0,float=0); void getOffset(float[]); void getPosition(float[]); private: float position[3]; float offset[3]; }; Some of the functions: void Car::move(float time){ float distance = velocity*time; location[0] += distance*cos(PI/2 - heading); location[1] += distance*sin(PI/2 - heading); float driverLocation [3]; float offset[3]; driver->getOffset(offset); for (int i = 0; i < 3; i++){ driverLocation[i] = offset[i] + location[i]; } } void Car::getDriverPosition(float p[]){ driver.getPosition(p); } void Person::getPosition(float p[]){ for (int i = 0; i < 3; i++){ p[i] = position[i]; } } void Person::getOffset(float o[]){ for (int i = 0; i < 3; i++){ o[i] = offset[i]; } } In Main: Car * car = new Car(); car->move(); float p[3]; car->getDriverPosition(p); When I print driverLocation[] inside the move() function, I have actual nonzero values. When I print p[] inside main, all I get are zeros.

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• HP Presario CQ 61-322ER (VV884EA) Wi-Fi hang up! [closed]

  - by qgrabber

  Possible Duplicate: HP Presario CQ 61-322ER (VV884EA) Wi-Fi hang up! I have my new laptop and don't have Windows XP drivers for it. I found that it contains the Broadcom BCM4310 chip, but when I install any Broadcom driver my laptop hangup on installing bcm5*.sys driver. Only power-off button make any effect. After reboot the device list (Device Manager) contains Broadcom WLAN adapter, but it is marked as disabled, for some hardware errror! Also if I disable device before, and install driver - then - all is OK! But when I try to enable it, Windows hang up anyway (no speaker beep, no mouse input, no keyboard input - nothing) What is the solution?

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• ElanTech touchpad both keys simultaneously don't work

  - by Wojciech

  I have a huge problem with ElanTech touchpad. Without the ElanTech driver both the keys can be used at the same time(R+L). This is usefull in games like Mafia2 (can't play without it). When I install their driver I get the gestures, scrolling etc. but I can't use both keys at the same time. It is a common problem. Acer Aspire v3-571G Windows 7 x64 This didn't work at all: Synaptics 15.3.41.5 Is there any universal driver which will give me at least scrolling and simultaneous keys usage?

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• USB 3.0 port with USB 3.0 device in Ubuntu 12.10

  - by fernando garcía

  When I try to connect a USB 3.0 device in Ubuntu 12.10 (ASUS K55VD, kernel 3.5.0-19-generic #30-Ubuntu SMP), the system says [ 74.747832] hub 3-0:1.0: unable to enumerate USB device on port 1 [ 74.931957] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd [ 74.949390] usb 4-1: New USB device found, idVendor=05e3, idProduct=0731 [ 74.949396] usb 4-1: New USB device strings: Mfr=0, Product=1, SerialNumber=2 [ 74.949400] usb 4-1: Product: USB Storage [ 74.949403] usb 4-1: SerialNumber: 0000000000000033 [ 75.033327] usbcore: registered new interface driver uas [ 75.038548] Initializing USB Mass Storage driver... [ 75.038651] scsi7 : usb-storage 4-1:1.0 [ 75.038700] usbcore: registered new interface driver usb-storage [ 75.038701] USB Mass Storage support registered. but it does not recognize the device, and the disks applications (gparted, nautilus) act as if nothing had been connected. I have checked other questions, but either they have no answers or they told about previous Ubuntu version with 3.0.x kernels. A USB 2.0 device will work in the USB 3.0 ports. A USB 3.0 device will work (at USB 2.0 speeds) in the USB 2.0 ports. The problem, as I wrote, is between USB 3.0 devices and USB 3.0 ports. I have my USB 3.0 ports configured without legacy support via the BIOS (the way they should be, I suppose). But I also have tried to configure them with XHCI Preboot mode disabled. Have any one solved a similar problem? Thanks in advance.

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• How do I connect my NetXtreme BCM5755M Gigabit Ethernet PCI Express in y Dell latitude d630?

  - by Stanton.Sculpture

  Trying to get my 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755M Gigabit Ethernet PCI Express (rev 02) working with my wifi. I just installed Raring Ringtail on this dell latitude D630 and I can't get it to connect without a wifi dongle. This is what I got when I typed sudo lshw -c network: *-network description: Ethernet interface product: NetXtreme BCM5755M Gigabit Ethernet PCI Express vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 02 serial: 00:21:70:98:04:32 capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.128 firmware=5755m-v3.29 latency=0 link=no multicast=yes port=twisted pair resources: irq:44 memory:fe8f0000-fe8fffff *-network description: Wireless interface physical id: 2 bus info: usb@2:1 logical name: wlan0 serial: 7c:dd:90:11:a0:10 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rt2800usb driverversion=3.8.0-31-generic firmware=0.29 ip=10.0.0.8 link=yes multicast=yes wireless=IEEE 802.11bgn Also, when I go to additional drivers in the software and updates settings, no proprietary drivers show up. I've tried sudo apt-get install b43-fwcutter firmware-b43-installer because it worked on a bunch of old Dell laptops that I converted over before, but it didn't work on this one. Is this driver even compatible with wifi? Please help.

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• What is ODBC?

  According to Microsoft, ODBC is a specification for a database API.  This API is database and operating system agnostic due to the fact that the primary goal of the ODBC API is to be language-independent. Additionally, the open functions of the API are created by the manufactures of DBMS-specific drivers. Developers can use these exposed functions from within their own custom applications so that they can communicate with DBMS through the language-independent drivers. ODBC Advantages Multiple ODBC drivers for each DBSM Example Oracle’s ODBC Driver Merant’s Oracle Driver Microsoft’s Oracle Driver ODBC Drivers are constantly updated for the latest data types ODBC allows for more control when querying ODBC allows for Isolation Levels ODBC Disadvantages ODBC Requires DSN ODBC is the proxy between an application and a database ODBC is dependent on third party drivers ODBC Transaction Isolation Levels are related to and limited by the transaction management capabilities of the data source. Transaction isolation levels:  READ UNCOMMITTED Data is allowed to be read prior to the committing of a transaction.  READ COMMITTED Data is only accessible after a transaction has completed  REPEATABLE READ The same data value is read during the entire transaction  SERIALIZABLE Transactions have no effect on other transactions

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• Scanner that worked with Ubuntu 10.4 cannot be found by 13.4

  - by stevecoh1

  My computer previously ran Ubuntu 10.4. After upgrading to 13.4, my Epson scanner no longer can be found by the system. Following documentation, I find the following: $ sane-find-scanner # sane-find-scanner will now attempt to detect your scanner. If the # result is different from what you expected, first make sure your # scanner is powered up and properly connected to your computer. # No SCSI scanners found. If you expected something different, make sure that # you have loaded a kernel SCSI driver for your SCSI adapter. could not open USB device 0x046d/0x082b at 001:007: Access denied (insufficient permissions) ... # No USB scanners found. If you expected something different, make sure that # you have loaded a kernel driver for your USB host controller and have setup # the USB system correctly. See man sane-usb for details. ... If I instead run sudo sane-find-scanner, I get $ sudo sane-find-scanner # sane-find-scanner will now attempt to detect your scanner. If the # result is different from what you expected, first make sure your # scanner is powered up and properly connected to your computer. # No SCSI scanners found. If you expected something different, make sure that # you have loaded a kernel SCSI driver for your SCSI adapter. found USB scanner (vendor=0x04b8 [EPSON], product=0x0131 [EPSON Scanner]) at libusb:001:009 could not fetch string descriptor: Pipe error could not fetch string descriptor: Pipe error # Your USB scanner was (probably) detected. It may or may not be supported by # SANE. Try scanimage -L and read the backend's manpage. So what do I do? scanimage -L does nothing for me and I don't know what the "backend's manpage" might be. It's seems likely that this is a permissions issue since the scanner can be found as root, but I don't know how to solve it. Can someone help?

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• hp pavilion g6 1250 with a BCM 4313 doesn't see any wireless networks

  - by Ahmed Kotb

  i have tried using ubuntu 10.04 and ubuntu 11.10 and both have the same problem the driver is detected by the additional propriety drivers wizard and after installation, ubuntu can't see except on wireless network which is not mine (and i can't connect to it as it is secured) There are plenty of wireless networks around me but ubuntu can't detect them and if i tried to connect to one of them as if it was hidden connection time out. the command lspci -nvn | grep -i net gives 04:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01) 05:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05) iwconfig gives lo no wireless extensions. eth0 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off i guess it is something related to Broadcom driver .. but i don't know , any help will be appreciated UPDATE: ok i installed a new copy of 11.10 to remove the effect of any trials i have made i followed the link (http://askubuntu.com/q/67806) as suggested all what i have done now is trying the command lsmod | grep brc and it gave me the following brcmsmac 631693 0 brcmutil 17837 1 brcmsmac mac80211 310872 1 brcmsmac cfg80211 199587 2 brcmsmac,mac80211 crc_ccitt 12667 1 brcmsmac then i blacklisted all the other drivers as mentioned in the link the wireless is still disabled.. in the last installation installing the Brodcom STA driver form the additional drivers enabled the menu but as i have said before it wasn't able to connect or even get a list of available networks so what should i do now ? the output of command rfkill list all rfkill list all 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no

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• Java crashes on lubuntu but not Ubuntu

  - by Echogene

  I have lubuntu and Ubuntu partitions on my drive. I've been having an interesting time with the new lubuntu partition. I've encountered strange things with the game Minecraft, Java and graphics drivers on the lubuntu partition. Firstly, I'll say that Minecraft runs fine at about 60fps on the Ubuntu partition with the latest drivers. (This is lower than it should be as it's a pretty decent graphics card [Radeon HD 5700].) When I first started lubuntu, I tried to see if I could get Minecraft running on Java. Java crashed when loading the main game graphics on both Sun and OpenJDK without proprietary drivers. Java also crashed on both Javas with proprietary drivers after the necessary restart. However, after disabling (with 'remove' button) the proprietary drivers with jockey-gtk in the session after the restart to install the drivers, Minecraft ran very well at ~120fps. This didn't continue after another restart, when it ran at 9fps. After failing thereafter on lubuntu to get it working at 15fps, I tried reinstalling lubuntu and installed the exact same driver (the latest one, not the one appearing on jockey) and Java versions as on Ubuntu. That is, now Ubuntu and lubuntu have the same graphics driver and Java version. Minecraft still crashes in the same way on lubuntu but works fine on Ubuntu. I would appreciate any explanation for any of these events. What differences between lubuntu and Ubuntu could cause this? Edit: After installing the 32bit driver version on lubuntu (seeing as lubuntu is 32bit), I have Java "working" for Minecraft. However, it is at <15fps again and it can't log in to servers as it takes too long.

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• The ship "shudders" in scrolling Asteroids

  - by Ciaran

  In my Asteroids game the user can scroll through space. When scrolling, the ship is drawn in the centre of the window. I use interpolation. I scroll the window uing glOrtho, centering it around the centre of the ship. On my first machine (7 years old, Windows XP, NVIDIA), I am doing 50 updates and 76 frames per second. This is smooth. My other machine an old compaq laptop (Pentium III) with Linux and Radeon OpenGL driver delivers 50 updates and 30 frames per second. The ship regularly seems to "shudder" back and forth when at maximum thrust. When you position the mouse cursor beside the ship it is obvious that its relative position in the window changes. Also, the stars seem blurred into short "lines". Playing the game in non-scrolling mode, the ship moves within the window, glOrtho is therefore not called repeatedly and there is no problem. I suspect a bug in my positioning of the ship and the window but I have dumped out these values and they seem to only go forward, not forward-back-forward. The driver does support double buffering. I guess if it is my bug I need to slow the frame-rate down to debug properly. My question: is this an obvious driver bug or is the slower machine uncovering a bug in my stuff and if so, some debugging tips would be appreciated. I am drawing in world co-ordinates and letting OpenGL do the scaling and translation so if I had a quick way of verifying what pixel co-ordinates OpenGL produces for the ship centre, that would help clarify this.

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• cuda install in ubuntu13.10?

  - by hexiangpeng

  the cuda_install_.log show ERROR: Unable to build the NVIDIA kernel module. 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. The driver installation is unable to locate the kernel source. Please make sure that the kernel source packages are installed and set up correctly. and the other .log show ^ /tmp/selfgz3964/NVIDIA-Linux-x86-319.37/kernel/nv-i2c.c: In function ‘nv_i2c_del_adapter’: /tmp/selfgz3964/NVIDIA-Linux-x86-319.37/kernel/nv-i2c.c:327:14: error: void value not ignored as it ought to be osstatus = i2c_del_adapter(pI2cAdapter); ^ make[3]: * [/tmp/selfgz3964/NVIDIA-Linux-x86-319.37/kernel/nv-i2c.o] ?? 1 make[2]: * [module/tmp/selfgz3964/NVIDIA-Linux-x86-319.37/kernel] ?? 2 NVIDIA: left KBUILD. nvidia.ko failed to build! make[1]: * [module] ?? 1 make: * [module] ?? 2 - Error. ERROR: Unable to build the NVIDIA kernel module. 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. i don't understand

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• Resolution stuck after playing OpenGL game

  - by kit.yang

  I used to start the game,Frozen Throne (using wine) with the option of "-opengl".When I entered the game,the resolution will changed,and restored after exit the game. But this time a problem happened.The resolution can't restore although I restart my computer several times. Both the Ubuntu pane and login windows are exceptional. nvidia-settingsalso detect the resolution is "1024 x 768",But it seemed useless using this tool. Screenshot-NVIDIA X Server Settings: the result of xrandr: Screen 0: minimum 320 x 240, current 1024 x 768, maximum 1024 x 768 default connected 1024x768+0+0 0mm x 0mm 1024x768 50.0* 800x600 51.0 52.0 53.0 680x384 54.0 55.0 640x480 56.0 576x432 57.0 512x384 58.0 400x300 59.0 60.0 61.0 320x240 62.0 the configure of /etc/X11/xorg.conf: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 1.0 (buildd@yellow) Fri Apr 9 11:51:21 UTC 2010 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" # HorizSync source: builtin, VertRefresh source: builtin Identifier "Monitor0" VendorName "Unknown" ModelName "CRT-0" HorizSync 28.0 - 55.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Entry Graphics" EndSection Section "Screen" # Removed Option "metamodes" "1024x768 +0+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "CRT-0" Option "metamodes" "1024x768_60 +0+0" SubSection "Display" Depth 24 EndSubSection EndSection

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• Syslog/kernlog filling up with "did not claim interface N before use"

  - by Wayne Werner

  As I discovered when asking this question, it appears that demond_nscan is trying to use a device without claiming it. And it does it.... hundreds of time per second apparently. This makes kern.log and syslog huge (100GB ). In this particular case the problem is directly a result of some Lexmark drivers that were installed (found at /usr/local/lexmark/unix_scan_drivers/bin/demond_nscan). Here are a few things I know: The drivers are for an all-in-one printer/scanner device. There was a previous lexmark printer-only that was installed with CUPS This driver was the one for CUPS systems, and I think that it automatically added it to the list of printers in CUPS. The issue started spamming kern/syslog only after these drivers were installed, using the lexmark installers While googling around I found this thread that's not completely related, but it does mention that it might be happening when two drivers try to control the same device at the same time. How can I resolve this issue so that either I only have one driver, or get the driver to claim the device before usage?

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• Using a portable USB monitor in Ubuntu 13.04 (AOC e1649Fwu - DisplayLink)

  Having access to a little bit of IT hardware extravaganza isn't that easy here in Mauritius for exactly two reasons - either it is simply not available or it is expensive like nowhere. Well, by chance I came across an advert by a local hardware supplier and their offer of the week caught my attention - a portable USB monitor. Sounds cool, and the specs are okay as well. It's completely driven via USB 2.0, has a light weight, the dimensions would fit into my laptop bag and the resolution of 1366 x 768 pixels is okay for a second screen. Long story, short ending: I called them and only got to understand that they are out of stock - how convenient! Well, as usual I left some contact details and got the regular 'We call you back' answer. Surprisingly, I didn't receive a phone call as promised and after starting to complain via social media networks they finally came back to me with new units available - and *drum-roll* still the same price tag as promoted (and free delivery on top as one of their employees lives in Flic en Flac). Guess, it was a no-brainer to get at least one unit to fool around with. In worst case it might end up as image frame on the shelf or so... The usual suspects... Ubuntu first! Of course, the packing mentions only Windows or Mac OS as supported operating systems and without hesitation at all, I hooked up the device on my main machine running on Ubuntu 13.04. Result: Blackout... Hm, actually not the situation I was looking for but okay can't be too difficult to get this piece of hardware up and running. Following the output of syslogd (or dmesg if you prefer) the device has been recognised successfully but we got stuck in the initialisation phase. Oct 12 08:17:23 iospc2 kernel: [69818.689137] usb 2-4: new high-speed USB device number 5 using ehci-pciOct 12 08:17:23 iospc2 kernel: [69818.800306] usb 2-4: device descriptor read/64, error -32Oct 12 08:17:24 iospc2 kernel: [69819.043620] usb 2-4: New USB device found, idVendor=17e9, idProduct=4107Oct 12 08:17:24 iospc2 kernel: [69819.043630] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3Oct 12 08:17:24 iospc2 kernel: [69819.043636] usb 2-4: Product: e1649FwuOct 12 08:17:24 iospc2 kernel: [69819.043642] usb 2-4: Manufacturer: DisplayLinkOct 12 08:17:24 iospc2 kernel: [69819.043647] usb 2-4: SerialNumber: FJBD7HA000778Oct 12 08:17:24 iospc2 kernel: [69819.046073] hid-generic 0003:17E9:4107.0008: hiddev0,hidraw5: USB HID v1.10 Device [DisplayLink e1649Fwu] on usb-0000:00:1d.7-4/input1Oct 12 08:17:24 iospc2 mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"Oct 12 08:17:24 iospc2 mtp-probe: bus: 2, device: 5 was not an MTP deviceOct 12 08:17:30 iospc2 kernel: [69825.411220] [drm] vendor descriptor length:17 data:17 5f 01 00 15 05 00 01 03 00 04Oct 12 08:17:30 iospc2 kernel: [69825.498778] udl 2-4:1.0: fb1: udldrmfb frame buffer deviceOct 12 08:17:30 iospc2 kernel: [69825.498786] [drm] Initialized udl 0.0.1 20120220 on minor 1Oct 12 08:17:30 iospc2 kernel: [69825.498909] usbcore: registered new interface driver udl The device has been recognised as USB device without any question and it is listed properly: # lsusb...Bus 002 Device 005: ID 17e9:4107 DisplayLink ... A quick and dirty research on the net gave me some hints towards the udlfb framebuffer device for USB DisplayLink devices. By default this kernel module is blacklisted $ less /etc/modprobe.d/blacklist-framebuffer.conf | grep udl#blacklist udlblacklist udlfb and it is recommended to load it manually. So, unloading the whole udl stack and giving udlfb a shot: Oct 12 08:22:31 iospc2 kernel: [70126.642809] usbcore: registered new interface driver udlfb But still no reaction on the external display which supposedly should have been on and green. Display okay? Test run on Windows Just to be on the safe side and to exclude any hardware related defects or whatsoever - you never know what happened during delivery. I moved the display to a new position on the opposite side of my laptop, installed the display drivers first in Windows Vista (I know, I know...) as recommended in the manual, and then finally hooked it up on that machine. Tada! Display has been recognised correctly and I have a proper choice between cloning and extending my desktop. Testing whether the display is working properly - using Windows Vista Okay, good to know that there is nothing wrong on the hardware side just software... Back to Ubuntu - Kernel too old Some more research on Google and various hits recommend that the original displaylink driver has been merged into the recent kernel development and one should manually upgrade the kernel image (and both header) packages for Ubuntu. At least kernel 3.9 or higher would be necessary, and so I went out to this URL: http://kernel.ubuntu.com/~kernel-ppa/mainline/ and I downloaded all the good stuff from the v3.9-raring directory. The installation itself is easy going via dpkg: $ sudo dpkg -i linux-image-3.9.0-030900-generic_3.9.0-030900.201304291257_amd64.deb$ sudo dpkg -i linux-headers-3.9.0-030900_3.9.0-030900.201304291257_all.deb$ sudo dpkg -i linux-headers-3.9.0-030900-generic_3.9.0-030900.201304291257_amd64.deb As with any kernel upgrades it is necessary to restart the system in order to use the new one. Said and done: $ uname -r3.9.0-030900-generic And now connecting the external display gives me the following output in /var/log/syslog: Oct 12 17:51:36 iospc2 kernel: [ 2314.984293] usb 2-4: new high-speed USB device number 6 using ehci-pciOct 12 17:51:36 iospc2 kernel: [ 2315.096257] usb 2-4: device descriptor read/64, error -32Oct 12 17:51:36 iospc2 kernel: [ 2315.337105] usb 2-4: New USB device found, idVendor=17e9, idProduct=4107Oct 12 17:51:36 iospc2 kernel: [ 2315.337115] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3Oct 12 17:51:36 iospc2 kernel: [ 2315.337122] usb 2-4: Product: e1649FwuOct 12 17:51:36 iospc2 kernel: [ 2315.337127] usb 2-4: Manufacturer: DisplayLinkOct 12 17:51:36 iospc2 kernel: [ 2315.337132] usb 2-4: SerialNumber: FJBD7HA000778Oct 12 17:51:36 iospc2 kernel: [ 2315.338292] udlfb: DisplayLink e1649Fwu - serial #FJBD7HA000778Oct 12 17:51:36 iospc2 kernel: [ 2315.338299] udlfb: vid_17e9&pid_4107&rev_0129 driver's dlfb_data struct at ffff880117e59000Oct 12 17:51:36 iospc2 kernel: [ 2315.338303] udlfb: console enable=1Oct 12 17:51:36 iospc2 kernel: [ 2315.338306] udlfb: fb_defio enable=1Oct 12 17:51:36 iospc2 kernel: [ 2315.338309] udlfb: shadow enable=1Oct 12 17:51:36 iospc2 kernel: [ 2315.338468] udlfb: vendor descriptor length:17 data:17 5f 01 0015 05 00 01 03 00 04Oct 12 17:51:36 iospc2 kernel: [ 2315.338473] udlfb: DL chip limited to 1500000 pixel modesOct 12 17:51:36 iospc2 kernel: [ 2315.338565] udlfb: allocated 4 65024 byte urbsOct 12 17:51:36 iospc2 kernel: [ 2315.343592] hid-generic 0003:17E9:4107.0009: hiddev0,hidraw5: USB HID v1.10 Device [DisplayLink e1649Fwu] on usb-0000:00:1d.7-4/input1Oct 12 17:51:36 iospc2 mtp-probe: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"Oct 12 17:51:36 iospc2 mtp-probe: bus: 2, device: 6 was not an MTP deviceOct 12 17:51:36 iospc2 kernel: [ 2315.426583] udlfb: 1366x768 @ 59 Hz valid modeOct 12 17:51:36 iospc2 kernel: [ 2315.426589] udlfb: Reallocating framebuffer. Addresses will change!Oct 12 17:51:36 iospc2 kernel: [ 2315.428338] udlfb: 1366x768 @ 59 Hz valid modeOct 12 17:51:36 iospc2 kernel: [ 2315.428343] udlfb: set_par mode 1366x768Oct 12 17:51:36 iospc2 kernel: [ 2315.430620] udlfb: DisplayLink USB device /dev/fb1 attached. 1366x768 resolution. Using 4104K framebuffer memory Okay, that's looks more promising but still only blackout on the external screen... And yes, due to my previous modifications I swapped the blacklisted kernel modules: $ less /etc/modprobe.d/blacklist-framebuffer.conf | grep udlblacklist udl#blacklist udlfb Silly me! Okay, back to the original situation in which udl is allowed and udlfb blacklisted. Now, the logging looks similar to this and the screen shows those maroon-brown and azure-blue horizontal bars as described on other online resources. Oct 15 21:27:23 iospc2 kernel: [80934.308238] usb 2-4: new high-speed USB device number 5 using ehci-pciOct 15 21:27:23 iospc2 kernel: [80934.420244] usb 2-4: device descriptor read/64, error -32Oct 15 21:27:24 iospc2 kernel: [80934.660822] usb 2-4: New USB device found, idVendor=17e9, idProduct=4107Oct 15 21:27:24 iospc2 kernel: [80934.660832] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3Oct 15 21:27:24 iospc2 kernel: [80934.660838] usb 2-4: Product: e1649FwuOct 15 21:27:24 iospc2 kernel: [80934.660844] usb 2-4: Manufacturer: DisplayLinkOct 15 21:27:24 iospc2 kernel: [80934.660850] usb 2-4: SerialNumber: FJBD7HA000778Oct 15 21:27:24 iospc2 kernel: [80934.663391] hid-generic 0003:17E9:4107.0008: hiddev0,hidraw5: USB HID v1.10 Device [DisplayLink e1649Fwu] on usb-0000:00:1d.7-4/input1Oct 15 21:27:24 iospc2 mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"Oct 15 21:27:24 iospc2 mtp-probe: bus: 2, device: 5 was not an MTP deviceOct 15 21:27:25 iospc2 kernel: [80935.742407] [drm] vendor descriptor length:17 data:17 5f 01 00 15 05 00 01 03 00 04Oct 15 21:27:25 iospc2 kernel: [80935.834403] udl 2-4:1.0: fb1: udldrmfb frame buffer deviceOct 15 21:27:25 iospc2 kernel: [80935.834416] [drm] Initialized udl 0.0.1 20120220 on minor 1Oct 15 21:27:25 iospc2 kernel: [80935.836389] usbcore: registered new interface driver udlOct 15 21:27:25 iospc2 kernel: [80936.021458] [drm] write mode info 153 Next, it's time to enable the display for our needs... This can be done either via UI or console, just as you'd prefer it. Adding the external USB display under Linux isn't an issue after all... Settings Manager => Display Personally, I like the console. With the help of xrandr we get the screen identifier first $ xrandrScreen 0: minimum 320 x 200, current 3200 x 1080, maximum 32767 x 32767LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm...DVI-0 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm   1366x768       60.0*+ and then give it the usual shot with auto-configuration. Let the system decide what's best for your hardware... $ xrandr --output DVI-0 --off$ xrandr --output DVI-0 --auto And there we go... Cloned output of main display: New kernel, new display... The external USB display works out-of-the-box with a Linux kernel > 3.9.0. Despite of a good number of resources it is absolutely not necessary to create a Device or Screen section in one of Xorg.conf files. This information belongs to the past and is not valid on kernel 3.9 or higher. Same hardware but Windows 8 Of course, I wanted to know how the latest incarnation from Redmond would handle the new hardware... Flawless! Most interesting aspect here: I did not use the driver installation medium on purpose. And I was right... not too long afterwards a dialog with the EULA of DisplayLink appeared on the main screen. And after confirmation of same it took some more seconds and the external USB monitor was ready to rumble. Well, and not only that one... but see for yourself. This time Windows 8 was the easiest solution after all. Resume I can highly recommend this type of hardware to anyone asking me. Although, it's dimensions are 15.6" it is actually lighter than my Samsung Galaxy Tab 10.1 and it still fits into my laptop bag without any issues. From now on... no more single screen while developing software on the road!

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• Synaptics error "no touchpad found" at startup on HP laptop

  - by Sandra

  I know there are a lot of topics on the synaptics touchpad not working, but I can't seem to find the answer to my problem anywhere. Please forgive me if I missed it. Here is what happened. After using the "ambient light" F11 key on my HP laptop (Compaq nc8430), the touchpad was disabled and I couldn't get it to work. Then I found this thread : "Synaptic touchpad on laptop not working". And Salem's answer totally solved my problem, both for the session fix and for the permanent fix. But since then, after each reboot I get the same error pop-up, with the following content: No touchpad found. No touchpad was found in this system. If the system has a touchpad, please make sure that the synaptics driver is properly installed and configured. If your touchpad is not found, though the driver is installed and configured correctly, please compile detailed information about your touchpad hardware and report this issue to the issue tracker. Needless to say, the driver is indeed installed, activated and configured (even though it's kind of useless now, since I guess the .conf file I created is doing all the work). I know it's a minor issue, because the touchpad does work properly, but it's getting really annoying... So, could anyone please help me fix this error pop-up problem ? Thank you !

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• Canon Pixma 432 network scanner

  - by Donald Cutler

  I have a problem with a Canon Pixma MX432 Printer/Scanner. I just removed Windows 7 and installed Ubuntu 14.04 8/17/2014 on an older desktop that I built (The computer is an AMD build with an ASUS motherboard). The printer/scanner is an all-in-one unit that is networked in my house via WiFi. All of the computers in my house can access this printer/scanner. My Macbook, my wife's Windows 8 laptop, and my kids mini iPads. I am giving Linux a test-drive with some success as far as setting devices up. But, for the life of me I cannot figure out my scanner issue. If anyone can help I would appreciate it. Make/Model: Canon Pixma MX432 PPD Driver: I have no idea how to get this info. Supported?: no, from the information I gather from old forum posts. Works?: the printer works via WiFi perfectly, but not the scanner. The Simple Scan program sees the scanner, but produces an error when I attempt to scan. I also tried XSANE, but that program does not even detect the scanner. NOTE: THE PRINTER IS WORKING OFF OF AN UBUNTU DRIVER AND NOT A CANON DRIVER. Linux Version: Ubuntu 14.04 I tried the steps in this post, downloaded the "scangearmp-mx430series-1.90-1-deb.tar.gz" file, but could not get the scanner to work. http://ubuntuforums.org/archive/index.php/t-2096430.html any suggestions?

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• Missing Wireless access point

  - by nvcnvn

  I have an: Ubuntu 12.04 with proprietary Boardcom STA Wireless driver installed BCM43224 802.11a/b/g/n wireless card TP-LINK TD-W8101G 54Mbps Wireless ADSL2+ Modem Router Yesterday before I went to sleep, I still connect to my wireless access point, this morning when I start my laptop I don't see it in the list - there are some neighbors listed but not mine. The WLAN is green, with my old Nokia E72, I still see my access point with 100% signal. I have tried to restart my laptop and turn the firmware off/on by the switch but no help. I have read the WirelessTroubleShootingGuide but I can do anything. Here is some of my card info: *-network description: Wireless interface product: BCM43224 802.11a/b/g/n vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:04:00.0 logical name: eth1 version: 01 serial: c0:cb:38:06:5d:53 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 latency=0 multicast=yes wireless=IEEE 802.11abgn resources: irq:17 memory:f0500000-f0503fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 03 serial: f0:4d:a2:42:ab:e4 size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168d-1.fw ip=192.168.1.3 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:42 ioport:5000(size=256) memory:f0404000-f0404fff memory:f0400000-f0403fff memory:f0420000-f043ffff

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• Could not apply the stored configuration for the monitor

  - by dellphi

  I'm using Nvidia 7300 gt and monitor-Acer V173w, on 64 bit Ubuntu 10.04. Compiz and Emerald went well, but at the time of entry into the GUI, I always receive the message : "Could not apply the stored configuration for the monitor, could not find a suitable configuration of screens" Why do I always receive it, and what is wrong with the monitor configuration or pci-e is used? root@dellph1-desktop:/# xrandr Screen 0: minimum 320 x 240, current 1440 x 900, maximum 1440 x 900 default connected 1440x900+0+0 0mm x 0mm 1440x900 50.0* 1024x768 51.0 58.0 59.0 1360x768 52.0 53.0 1152x864 54.0 55.0 56.0 57.0 960x600 60.0 960x540 61.0 896x672 62.0 840x525 63.0 64.0 65.0 66.0 832x624 67.0 800x600 68.0 69.0 70.0 71.0 72.0 73.0 800x512 74.0 720x450 75.0 680x384 76.0 77.0 640x512 78.0 79.0 640x480 80.0 81.0 82.0 83.0 576x432 84.0 85.0 86.0 87.0 512x384 88.0 89.0 90.0 416x312 91.0 400x300 92.0 93.0 94.0 95.0 320x240 96.0 97.0 98.0 root@dellph1-desktop:/# === xorg.conf # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 260.19.29 ([email protected]) Wed Dec 8 12:27:27 PST 2010 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" # HorizSync source: xconfig, VertRefresh source: xconfig Identifier "Monitor0" VendorName "Unknown" ModelName "Acer V173W" HorizSync 30.0 - 83.0 VertRefresh 55.0 - 75.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce 7300 GT" EndSection Section "Screen" # Removed Option "metamodes" " 1440x900_60 +0+0; 1280x1024 +0+0" # Removed Option "metamodes" "1440x900 +0+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "CRT-0" Option "metamodes" "1440x900_75 +0+0; 1440x900 +0+0" SubSection "Display" Depth 24 EndSubSection EndSection

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• Frequent Disconnects with an Intel 3945ABG Wireless Card

  - by Alex Forsythe

  I'm brand new to Ubuntu, and I really love it so far, but one issue I have encountered is that my WLAN is disconnecting about every 5-10 minutes. Often times the connection is repaired automatically, but sometimes the network manager will repeatedly reject my encryption key (which of course is correct). Occasionally after a disconnect, the wireless network fails to show up at all. The only way I can solve this seems to be by completely restarting Ubuntu or connecting with a USB wireless adapter. I am using WPA/WPA2 encryption, which I've read can cause problems with network-manager, but I experience the exact same issues with WICD. I should probably note that I've not experienced any of these issues using Windows 7 on my other partition. I have a hunch that there may be a better driver out there for my card, but I have no idea how to go about searching for it or installing it. Any help would be really appreciated! lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric lspci -nnk 09:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5752 Gigabit Ethernet PCI Express [14e4:1600] (rev 02) Subsystem: Dell Device [1028:0201] Kernel driver in use: tg3 Kernel modules: tg3 0c:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02) Subsystem: Intel Corporation Device [8086:1020] Kernel driver in use: iwl3945 Kernel modules: iwl3945 rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no 3: dell-bluetooth: Bluetooth Soft blocked: yes Hard blocked: no

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• double screen in ubuntu 12.04?

  - by johan

  I am using ubuntu 12.04 and my video card is ATI Radeon 5000. I cannot use double screen (extended version). I get this error The selected configuration for displays could not be applied requested position/size for CRTC 148 is outside the allowed limit: position=(1280, 0), size=(1280, 768), maximum=(1440, 1440) I tried all display settings but it does not work. Some outputs from the system settings: root@ubuntu:~# lshw -C display *-display description: VGA compatible controller product: Madison [Radeon HD 5000M Series] vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=fglrx_pci latency=0 resources: irq:46 memory:e0000000-efffffff memory:f0020000-f003ffff ioport:d000(size=256) memory:f0000000-f001ffff root@ubuntu:~# aticonfig --initial Uninitialised file found, configuring. Using /etc/X11/xorg.conf Saving back-up to /etc/X11/xorg.conf.original-0 root@ubuntu:~# cat /etc/X11/xorg.conf Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 EndSection Section "Module" Load "glx" 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 "Default Screen" DefaultDepth 24 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 would appreciate any suggestions how to solve the problem. Thank you

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• Screen flickering when using midrange brightness values on Dell XPS

  - by Eliran Malka

  After a fresh Ubuntu install on my laptop, I discovered the function keys for screen brightness control (Fn+F4 and Fn+F5) are not working. Digging around here, I managed to get it to work by following the solution suggested on this post and that one, but alas — after applying it, a strange problem occurred: Setting the brightness level to any value other than minimum or maximum, the screen starts flickering back and forth from the selected level to full brightness, apparently due to Dell's power saver attempting to dim the screen to adjust the brightness levels. I looked up for a solution here on the site, and possibly everywhere, with no avail. Also tried: To manually control the brightness by configuring the ACPI level (setting values by echo [some_value] | sudo tee /sys/class/backlight/[vendor]_backlight/[some_key], without success. Installing the Intel graphics driver, thinking it's missing. Realized it's installed out of the box by installing Mesa Utils. How to resolve this? Environment Model: Dell Studio XPS 13 OS: Windows 7 64bit / Ubuntu 12.04 32bit (dual boot) Graphics Driver: Intel HD 3000 (Sandybridge Mobile x86/MMX/SSE2) lshw -C display output: *-display description: VGA compatible controller product: 2nd Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:47 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:2000(size=64)

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• Why are my 32bit OpenGL libraries pointing to mesa instead of nvidia, and how do I fix it?

  - by Codemonkey

  I have installed Nvidia's drivers on my Ubuntu 13 system, but according to this command (ldconfig -p | grep GL): $ ldconfig -p | grep GL libQtOpenGL.so.4 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 libGLU.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libGLU.so.1 libGLEWmx.so.1.8 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libGLEWmx.so.1.8 libGLEW.so.1.8 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libGLEW.so.1.8 libGLESv2.so.2 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/mesa-egl/libGLESv2.so.2 libGL.so.1 (libc6,x86-64) => /usr/lib/libGL.so.1 libGL.so.1 (libc6) => /usr/lib/i386-linux-gnu/mesa/libGL.so.1 libGL.so (libc6,x86-64) => /usr/lib/libGL.so libEGL.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 The 32bit version of OpenGL is pointing to mesa's libraries instead of nvidia. This causes my Steam games to refuse to launch with the error: Could not find required OpenGL entry point 'glGetError'! Either your video card is unsupported, or your OpenGL driver needs to be updated. Why is this the case? When the nvidia installer asked me if I wanted to install "32bit compatability libraries" (or something like that) I chose yes. How do I fix this? Edit: I just reinstalled the same Nvidia driver, and that apparently removed the 32bit OpenGL driver completely: $ ldconfig -p | grep libGL.so libGL.so.1 (libc6,x86-64) => /usr/lib/libGL.so.1 libGL.so (libc6,x86-64) => /usr/lib/libGL.so Now Steam won't start: You are missing the following 32-bit libraries, and Steam may not run: libGL.so.1 Again, I chose YES when the installer asked me if I wanted to install 32bit libraries. Why are they not installed!?

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