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  • My OpenCL kernel is slower on faster hardware.. But why?

    - by matdumsa
    Hi folks, As I was finishing coding my project for a multicore programming class I came up upon something really weird I wanted to discuss with you. We were asked to create any program that would show significant improvement in being programmed for a multi-core platform. I’ve decided to try and code something on the GPU to try out OpenCL. I’ve chosen the matrix convolution problem since I’m quite familiar with it (I’ve parallelized it before with open_mpi with great speedup for large images). So here it is, I select a large GIF file (2.5 MB) [2816X2112] and I run the sequential version (original code) and I get an average of 15.3 seconds. I then run the new OpenCL version I just wrote on my MBP integrated GeForce 9400M and I get timings of 1.26s in average.. So far so good, it’s a speedup of 12X!! But now I go in my energy saver panel to turn on the “Graphic Performance Mode” That mode turns off the GeForce 9400M and turns on the Geforce 9600M GT my system has. Apple says this card is twice as fast as the integrated one. Guess what, my timing using the kick-ass graphic card are 3.2 seconds in average… My 9600M GT seems to be more than two times slower than the 9400M.. For those of you that are OpenCL inclined, I copy all data to remote buffers before starting, so the actual computation doesn’t require roundtrip to main ram. Also, I let OpenCL determine the optimal local-worksize as I’ve read they’ve done a pretty good implementation at figuring that parameter out.. Anyone has a clue? edit: full source code with makefiles here http://www.mathieusavard.info/convolution.zip cd gimage make cd ../clconvolute make put a large input.gif in clconvolute and run it to see results

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  • How do I fix my installation of ATI Catalyst Video Drivers in 12.04 LTS?

    - by Boris
    My graphic card is a Mobility Radeon HD 4200 Series. I tried these 2 answers from What is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS? But unfortunately, it does not work for me: When running the amd script, I get this error message: $ sudo sh ./amd-driver-installer-12-4-x86.x86_64.run ... DKMS part of installation failed. Please refer to /usr/share/ati/fglrx-install.log for details When checking this log file, I get: Uninstalling any previously installed drivers. Creating symlink /var/lib/dkms/fglrx/8.961/source -> /usr/src/fglrx-8.961 DKMS: add completed. Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area.... cd /var/lib/dkms/fglrx/8.961/build; sh make.sh --nohints --uname_r=3.2.0-24-generic-pae --norootcheck......(bad exit status: 1) [Error] Kernel Module : Failed to build fglrx-8.961 with DKMS [Error] Kernel Module : Removing fglrx-8.961 from DKMS Deleting module version: 8.961 completely from the DKMS tree. Done. [Reboot] Kernel Module : update-initramfs When checking with fglrxinfo, I get: $ fglrxinfo X Error of failed request: BadRequest (invalid request code or no such operation) Major opcode of failed request: 138 (ATIFGLEXTENSION) Minor opcode of failed request: 66 () Serial number of failed request: 13 Current serial number in output stream: 13

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  • Log Debug Messages without Debug Serial on Shipped Device

    - by Kate Moss' Open Space
    Debug message is one of the ancient but useful way for problem resolving. Message is redirected to PB if KITL is enabled otherwise it goes to default debug port, usually a serial port on most of the platform but it really depends on how OEMWriteDebugString and OEMWriteDebugByte are implemented. For many reasons, we don't want to have a debug serial port, for example, we don't have enough spare serial ports and it can affect the performance. So some of the BSP designers decide to dump the messages into other media, could be a log file, shared memory or any solution that is suitable for the need. In CE 5.0 and previous, OAL and Kernel are linked into one binaries; in the other word, you can use whatever function in kernel, such as SC_CreateFileW to access filesystem in OAL, even this is strongly not recommended. But since the OAL is being a standalone executable in CE 6.0, we no longer can use this back door but only interface exported in NKGlobal which just provides enough for OAL but no more. Accessing filesystem or using sync object to communicate to other drivers or application is even not an option. Sounds like the kernel lock itself up; of course, OAL is in kernel space, you can still do whatever you want to hack into kernel, but once again, it is not only make it a dirty solution but also fragile. So isn't there an elegant solution? Let's see how a debug message print out. In private\winceos\COREOS\nk\kernel\printf.c, the OutputDebugStringW is the one for pumping out the messages; most of the code is for error handling and serialization but what really interesting is the following code piece     if (g_cInterruptsOff) {         OEMWriteDebugString ((unsigned short *)str);     } else {         g_pNKGlobal->pfnWriteDebugString ((unsigned short *)str);     }     CELOG_OutputDebugString(dwActvProcId, dwCurThId, str); It outputs the message to default debug output (is redirected to KITL when available) or OAL when needed but note that highlight part, it also invokes CELOG_OutputDebugString. Follow the thread to private\winceos\COREOS\nk\logger\CeLogInstrumentation.c, this function dump whatever input to CELOG. So whatever the debug message is we always got a clone in CELOG. General speaking, all of the debug message is logged to CELOG already, so what you need to do is using celogflush.exe with CELZONE_DEBUG zone, and then viewing the data using the by Readlog tool. Here are some information about these tools CELOG - http://msdn.microsoft.com/en-us/library/ee479818.aspx READLOG - http://msdn.microsoft.com/en-us/library/ee481220.aspx Also for advanced reader, I encourage you to dig into private\winceos\COREOS\nk\celog\celogdll, the source of CELOG.DLL and use it as a starting point to create a more lightweight debug message logger for your own device!

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  • Having trouble installing guest additions for a Xubuntu 13.10 guest OS in Virtualbox 4.2.10

    - by Duval Pearson III
    I am using Ubuntu 13.04 64-BIT as my host operating system running Virtual Box 4.2.10. I get this message when I tell virtualbox to install guest additions(CTRL+D),mounting the volume in the guest OS and run the VBoxLinuxAdditions.run file using root by: sudo ./VBoxLinuxAdditions.run It starts and then comes to these error messages: Verifying archive integrity... All good. Uncompressing VirtualBox 4.2.10 Guest Additions for Linux.......... VirtualBox Guest Additions installer Removing existing VirtualBox non-DKMS kernel modules ...done. Building the VirtualBox Guest Additions kernel modules The headers for the current running kernel were not found. If the following module compilation fails then this could be the reason. Building the main Guest Additions module ...done. Building the shared folder support module ...fail! (Look at /var/log/vboxadd-install.log to find out what went wrong) Doing non-kernel setup of the Guest Additions ...done. Installing the Window System drivers Warning: unknown version of the X Window System installed. Not installing X Window System drivers. Installing modules ...done. Installing graphics libraries and desktop services components ...done. allusers@allusers-VirtualBox:/media/allusers/VBOXADDITIONS_4.2.10_84104$ I followed everything from the official VirtualBox manual on installing guest additions for linux I used some other commands such as: sudo apt-get install build-essential linux-headers-$(uname -r) dkms and: sudo apt-get install virtualbox-guest-x11 I rebooted after executing those command and it still wont work. It still says the kernel modules are missing and the window is not seamless. Any idea what could be the problem?

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  • Cannot log into Cinnamon after deleting ~/.config

    - by msoa
    After I removed "./.config" from Home folder, I can not log in to the cinnamon session: failed to load session "cinnamon" What do I do? xsession-error: Xsession: X session started for tux at Fri Oct 26 06:35:58 IRST 2012 localuser:tux being added to access control list Setting IM through im-switch for locale=en_US. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service I am runing Cinnamon on a local machine, no on Virtualbox. but virtualbox is installed for some usage. !?

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  • centos how to install systemtap

    - by Mingfei.hua
    I'm really new to sysmtemtap. just want to install and try systemtap on my lab server. My Linux release version is centos 6.3 and kernel version 2.6.32-279.5.2.el6.i686. I followed some doument, do yum install kernel-devel yum install kernel-debuginfo yum install systemtap all completed without error or warning. but when I try to test systemtap by stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}' I got error Pass 1: parsed user script and 83 library script(s) using 25180virt/14088res/2684shr kb, in 120usr/10sys/161real ms. semantic error: missing i386 kernel/module debuginfo under '/lib/modules/2.6.32-279.5.2.el6.i686/build' while resolving probe point kernel.function("vfs_read")

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  • Suspending my laptop breaks ethernet over firewire, are there commands which can fix it?

    - by Josh
    As mentioned in this question I am using a firewire cable to provide a private network between my laptop and my desktop, because it makes using the screen sharing program synergy much nicer than using WIFI. However when I leave my office for the day and I suspend my laptop, when I return the next day, the desktop and the laptop cannot communicate over firewire anymore. The firewire0 device still has an IP address. but when I try and ping the desktop I get no route to host I'm using kernel 2.6.35-24-generic #42-Ubuntu SMP x86_64 on Ubuntu 10.10. Is there some way I can remedy this without a reboot? Like, removing some kernel modules and re-inserting them? Here's what I have tried so far and the results: root@token:~# dmesg|tail -n 1 [592525.204024] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 root@token:~# modprobe -r firewire_net firewire_ohci firewire_core root@token:~# modprobe -v firewire_ohci insmod /lib/modules/2.6.35-24-generic/kernel/lib/crc-itu-t.ko insmod /lib/modules/2.6.35-24-generic/kernel/drivers/firewire/firewire-core.ko insmod /lib/modules/2.6.35-24-generic/kernel/drivers/firewire/firewire-ohci.ko root@token:~# dmesg|tail [592525.204024] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592563.410868] firewire_ohci: Removed fw-ohci device. [592579.160086] firewire_ohci: Added fw-ohci device 0000:02:00.0, OHCI v1.10, 4 IR + 8 IT contexts, quirks 0x2 [592579.160137] firewire_ohci: isochronous cycle inconsistent [592579.660294] firewire_core: created device fw0: GUID 0000000000000000, S400 [592579.663805] firewire_core: created device fw1: GUID 0017f2fffe89bce6, S400 [592579.663813] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592579.700720] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592579.700842] firewire_core: refreshed device fw0 [592579.702603] firewire_net: firewire0: IPv4 over FireWire on device 0000000000000000 root@token:~# ping stan.firewire PING stan.firewire (192.168.100.1) 56(84) bytes of data. From token.local (192.168.100.3) icmp_seq=1 Destination Host Unreachable From token.local (192.168.100.3) icmp_seq=2 Destination Host Unreachable From token.local (192.168.100.3) icmp_seq=3 Destination Host Unreachable I also tried removing the modules prior to suspending, and re-inserting after resuming. This did not work either :-(

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  • How the kernel gives seg. fault for a scenario like this?

    - by bala1486
    I have a doubt in accessing some invalid data. How will the OS cause segmentation fault for a scenario like this? Suppose a date segment has some 100 bytes. This will be mapped and a page table entry will be created. But the page size is 4K. Consider the data segment is aligned with this page boundary. So at first consider accessing a valid data within the 100 bytes. So now the page table entry is in TLB. Next if you try to access some invalid data between the 100 and 4K, the entry is there in page table and will it be allowed to access the invalid data??? Thanks, Bala

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  • Upgrade to Ubuntu 13.10 in a VirtualBox: Gnome desktop not working

    - by Xavier
    I had Ubuntu 13.04 running in a VirtualBox (the host is WinXP). I've upgraded it to 13.10 but I've some issues: Gnome desktop is not working correctly (I can log in but the main menu bar remains empty - I can only log out with CTRL-ALT-BACKSPACE) I cannot build and install the VirtualBox Guest Addons: When trying to build it, it says: me@virtuntu:/etc/init.d$ sudo ./vboxadd setup Removing existing VirtualBox DKMS kernel modules ...done. Removing existing VirtualBox non-DKMS kernel modules ...done. Building the VirtualBox Guest Additions kernel modules The headers for the current running kernel were not found. If the following module compilation fails then this could be the reason. Building the main Guest Additions module ...done. Building the shared folder support module ...fail! (Look at /var/log/vboxadd-install.log to find out what went wrong) Doing non-kernel setup of the Guest Additions ...done. In the log file, I see the following error: /tmp/vbox.0/dirops.c:292:5: error: unknown field ‘readdir’ specified in initializer .readdir = sf_dir_read, ^ /tmp/vbox.0/dirops.c:292:5: warning: initialization from incompatible pointer type [enabled by default] /tmp/vbox.0/dirops.c:292:5: warning: (near initialization for ‘sf_dir_fops.flush’) [enabled by default] make[2]: *** [/tmp/vbox.0/dirops.o] Erreur 1 make[1]: *** [_module_/tmp/vbox.0] Erreur 2 make: *** [vboxsf] Erreur 2 Creating user for the Guest Additions. Anyone had a similar experience? Any clue to help me? Thanks a lot!

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  • Why is my Wacom Intuos tablet not detected?

    - by mjwittering
    I need a little help trying to install a Wacom Intuos tablet, model number CTL-480/S. My installation of Ubuntu 13.04, 64bit, doesn't seem to be able to detect the device. I've tried an few different USB ports on my machine and get the same result. I believe there is an issue because when I open the System Settings app from the launcher and browse to the Wacom Tablet section under hardware, it reports that there is 'No table detected'. When I use lsusb I can see the device is detected: Bus 003 Device 004: ID 056a:030e Wacom Co., Ltd I've also pulled the following from the syslog: Oct 16 16:51:05 earth kernel: [ 7062.388031] usb 3-5: new full-speed USB device number 4 using ohci_hcd Oct 16 16:51:05 earth kernel: [ 7062.611038] usb 3-5: New USB device found, idVendor=056a, idProduct=030e Oct 16 16:51:05 earth kernel: [ 7062.611042] usb 3-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Oct 16 16:51:05 earth kernel: [ 7062.611045] usb 3-5: Product: Intuos PS Oct 16 16:51:05 earth kernel: [ 7062.611047] usb 3-5: Manufacturer: Wacom Co.,Ltd. Oct 16 16:51:05 earth mtp-probe: checking bus 3, device 4: "/sys/devices/pci0000:00/0000:00:02.0/usb3/3-5" Oct 16 16:51:05 earth mtp-probe: bus: 3, device: 4 was not an MTP device I'd really appreciate any suggestions to help debug and install this device.

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  • Can't get Wireless RT2x00usb driver to work, and can't blacklist it

    - by TheLQ
    After a two year hiatus to Linux, I try it again out again. And then I run into to driver issues... I have an old Linksys WUSB54G v4 Wireless USB Adapter. In previous versions I had to use a combination of Ndiswrapper and Wicd to hope of getting it working. In 10.10, apparently there are built in drivers for it. Unfortunately they don't work. Fails to connect to my WPA network, fails to connect to my open unencrypted network. Wicd fails at "Obtaining IP address" or when using static IPs fails at verifying connectivity to network. Getting fed up I tried the ndiswrapper approach. Installed and configured, but still not working, even when blacklisting the rt2570 module. So for some debugging I added some lines to my /etc/modprobe.d/blacklist.conf file blacklist rt2570 blacklist prism54usb blacklist rt2x00lib blacklist rt2x00usb Restart and find this: lordquackstar@quackbeast:/etc/modprobe.d$ lsmod | grep rt2 rt2500usb 18049 0 rt2x00usb 9779 1 rt2500usb rt2x00lib 27275 2 rt2500usb,rt2x00usb led_class 2633 1 rt2x00lib mac80211 231541 2 rt2x00usb,rt2x00lib cfg80211 144470 2 rt2x00lib,mac80211 Seems to be ignored... Tried this: lordquackstar@quackbeast:/etc/modprobe.d$ sudo rmmod -f rt2x00usb ERROR: Removing 'rt2x00usb': Resource temporarily unavailable lordquackstar@quackbeast:/etc/modprobe.d$ sudo rmmod -f rt2x00lib ERROR: Removing 'rt2x00lib': Resource temporarily unavailable and couldn't connect. Restarted and was back to the same modules loading. Maybe there's something in the log: lordquackstar@quackbeast:/etc/modprobe.d$ tail -n100000 /var/log/syslog | grep rt2 Dec 13 19:01:15 quackbeast kernel: [ 23.698056] Registered led device: rt2500usb-phy0::radio Dec 13 19:01:15 quackbeast kernel: [ 23.698140] Registered led device: rt2500usb-phy0::quality Dec 13 19:01:15 quackbeast kernel: [ 23.701680] usbcore: registered new interface driver rt2500usb Dec 13 19:01:15 quackbeast NetworkManager[855]: <info> (wlan0): new 802.11 WiFi device (driver: 'rt2500usb' ifindex: 4) Dec 13 19:17:47 quackbeast kernel: [ 23.521759] Registered led device: rt2500usb-phy0::radio Dec 13 19:17:47 quackbeast kernel: [ 23.521824] Registered led device: rt2500usb-phy0::quality Dec 13 19:17:47 quackbeast kernel: [ 23.524740] usbcore: registered new interface driver rt2500usb Dec 13 19:17:47 quackbeast NetworkManager[798]: <info> (wlan0): new 802.11 WiFi device (driver: 'rt2500usb' ifindex: 4) Seems to be autoloading. So this means that even if I pull it out, remove the module, and get it working, it still won't work when its plugged in all the time. More info: lordquackstar@quackbeast:/etc/modprobe.d$ sudo lshw -C Network *SNIP* *-network description: Wireless interface physical id: 1 bus info: usb@1:2 logical name: wlan0 serial: 00:12:17:9b:f3:1e capabilities: ethernet physical wireless configuration: broadcast=yes driver=rt2500usb driverversion=2.6.35-24-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg USB: lordquackstar@quackbeast:/etc/modprobe.d$ lsusb | grep -i rt Bus 001 Device 003: ID 13b1:000d Linksys WUSB54G v4 802.11g Adapter [Ralink RT2500USB] Any suggestions on how to either fix the rt2x00usb driver or permanently block it from loading? Note that I already have ndiswrapper installed

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  • sysctl.conf ignore net settings

    - by Steffen Unland
    I have a little problem with sysctl on a Ubuntu 10.04 LTS system. When I set the sysctl values with "sysctl -w " all work fine, but when I try to use the sysctl.conf file. the net settings will be ignored. For example my sysctl.conf # /etc/sysctl.conf - Configuration file for setting system variables kernel.domainname=findme.sysctl # Corefiles information fs.suid_dumpable=2 kernel.core_pattern=/cores/core-%e-%s-%u-%g-%p-%t ##############################################################3 # Functions previously found in netbase net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait=1 net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait=1 when I grep to the values, I can see that the sysctl settings for net.ipv4.netfilter don't set. [host:~ ] $ sysctl -a | grep domainname kernel.domainname = findme.sysctl [host:~ ] $ sysctl -a | grep "core_pattern" kernel.core_pattern = /cores/core-%e-%s-%u-%g-%p-%t [host:~ ] $ sysctl -a | grep "timeout_fin_wait" net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 120 net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait = 120 [host:~ ] $ sysctl -a | grep "timeout_close_wait" net.netfilter.nf_conntrack_tcp_timeout_close_wait = 60 net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait = 60 can somebody help me to solve the problem? If you need more information I can post it. Cheers, Steffen

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  • Failed to spawn test

    - by Lost
    Running a simple test in Ubuntu 12.04: sudo lxc-execute -n test /bin/bash -l debug -o outout Got error message: lxc-execute: failed to spawn 'test' cat outout: lxc-execute 1347053658.113 DEBUG lxc_start - sigchild handler set lxc-execute 1347053658.113 INFO lxc_start - 'test' is initialized lxc-execute 1347053658.366 DEBUG lxc_start - Dropping cap_sys_boot and watching utmp lxc-execute 1347053658.366 DEBUG lxc_cgroup - checking '/' (rootfs) lxc-execute 1347053658.366 DEBUG lxc_cgroup - checking '/sys' (sysfs) lxc-execute 1347053658.366 DEBUG lxc_cgroup - checking '/proc' (proc) lxc-execute 1347053658.366 DEBUG lxc_cgroup - checking '/dev' (devtmpfs) lxc-execute 1347053658.366 DEBUG lxc_cgroup - checking '/dev/pts' (devpts) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/run' (tmpfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/' (ext3) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/sys/fs/fuse/connections' (fusectl) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/sys/kernel/debug' (debugfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/sys/kernel/security' (securityfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/run/lock' (tmpfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/run/shm' (tmpfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/run/rpc_pipefs' (rpc_pipefs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/scratch/WAMC-Simulation' (nfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/share' (nfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/proj/WAMC-Simulation' (nfs) lxc-execute 1347053658.367 DEBUG lxc_cgroup - checking '/users/bhu' (nfs) lxc-execute 1347053658.367 ERROR lxc_start - failed to spawn 'test' Run command: sudo lxc-checkconfig Kernel config /proc/config.gz not found, looking in other places... Found kernel config file /boot/config-2.6.38.7-1.0emulab --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: enabled User namespace: enabled Network namespace: enabled Multiple /dev/pts instances: enabled --- Control groups --- Cgroup: enabled Cgroup namespace: enabled Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled Macvlan: enabled Vlan: enabled File capabilities: enabled Note : Before booting a new kernel, you can check its configuration usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig What's the problem? Thanks a lot

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  • Mac OS X read/write NTFS support

    - by Tiago Veloso
    I am trying to get read/write support for NTFS drives, under Mac os 10.6. I have tried to use NTFS 3G, but it seems it does not support 64 bit kernels. I was unable to change my Mac's Kernel to 32 bit. Is there a solution? I am running Snow Leopard, under a 2011 MBP13 I am getting the following error. After running system_profile | grep Kernel I get: ForkProBox:~ fork$ system_profiler | grep Kernel Kernel Version: Darwin 10.7.1 64-bit Kernel and Extensions: Yes I have ran the commands suggested here is their output Error tracking

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  • How can I mount an AFS filesystem?

    - by Ben
    My current method is to mount the filesystem via SSH using Nautilus's graphical interface, but I would much prefer to be able to use some tool that mounts the AFS filesystem and gives me access to AFS-specific features (permissions, etc.). I've tried installing OpenAFS via apt-get, but so far the kernel module has refused to compile. Also, assuming I get OpenAFS installed, I'm not quite sure how to actually mount the remote filesystem to, say, /media/afs or some directory. I'm running Maverick with the 2.6.36-020636-generic kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/ Thanks for the help!

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  • How do I install a Wimax usb driver?

    - by kakaz
    I am using wimax usb modem in Ubuntu 9.04 properly. I am familiar with Ubuntu 10.04 and try to install the same deb file to use my wimax USB modem, but it could not install and give me the following error message: $ sudo dpkg -i green-packet-wimax-usb_i386.iso.deb (Reading database ... 206628 files and directories currently installed.) Preparing to replace green-packet-wimax-usb 1.12 (using green-packet-wimax- usb_i386.iso.deb) ... /var/lib/dpkg/info/green-packet-wimax-usb.prerm: 45: /etc/init.d/wimaxd: not found Removing any system startup links for /etc/init.d/wimaxd ... FATAL: Module mt7118_usb_os not found. Unpacking replacement green-packet-wimax-usb ... Setting up green-packet-wimax-usb (1.12) ... FATAL: Error inserting mt7118_usb_glue (/lib/modules/2.6.32-28-generic/kernel/drivers/net/mt7118_usb_glue.ko): Invalid module format dpkg: error processing green-packet-wimax-usb (--install): subprocess installed post-installation script returned error exit status 1 Processing triggers for ureadahead ... Processing triggers for desktop-file-utils ... Processing triggers for python-gmenu ... Rebuilding /usr/share/applications/desktop.en_US.utf8.cache... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Processing triggers for python-support ... Errors were encountered while processing: The error (Line 9) give me some clue that the mt7118_usb_glue.ko kernel object can't insert it. So, I think this may be due to it's kernel dependencies. Can anybody tell me how I can install this kernel object to my new Ubuntu 10.04 kernel?

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  • HybridGraphics vga_switcheroo switch to intel at boot

    - by Jan
    How can I do that? I have followed this https://help.ubuntu.com/community/HybridGraphics but it didn't work I'm getting the error at boot that the /sys/kernel/debug/vgaswitcheroo/switch don't exist , so the problem seems to be that the /sys/kernel/debug don't exist when the grub parameters are processed and it is created after the grub parameter processing. So far I have made an alternative method, which works. In rc.local I granted full access to my user to /sys/kernel/debug then also to /sys/kernel/debug/vgaswitcheroo/switch and then I have made a simple script to switch the graphics to intel and putted it in ~./confif/autostart. The script is executed every time I log in to gnome. It's working however it would be nice if it worked at boot, as is described at that help.ubuntu.com page. Any ideas? Thanks

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  • How to return a single variable from a CUDA kernel function?

    - by Pooya
    I have a CUDA search function which calculate one single variable. How can I return it back. global void G_SearchByNameID(node* Node, long nodeCount, long start,char* dest, long answer){ answer = 2; } cudaMemcpy(h_answer, d_answer, sizeof(long), cudaMemcpyDeviceToHost); cudaFree(d_answer); for both of these lines I get this error: error: argument of type "long" is incompatible with parameter of type "const void *"

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  • How can a usb be detected but not show up anywhere?

    - by George Mauer
    I started the morning by trying to create a bootable usb using a 2gb stick and the startup disk creator. It seemed to run through the whole process just fine until it got to a screen that read something like "Creating memory partion" and which sat on 100% for about 45 minutes before I hit cancel and removed the usb stick. Now the usb stick is not being detected as storage or...anything (even on my windows pc) though it does show up in the syslog. Allow me to demonstrate. We start with the usb not plugged in: [georgemauer@ubuntu:~]$ sudo fdisk -l (04-04 16:01) Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x994bdc0f Device Boot Start End Blocks Id System /dev/sda1 2048 27650047 13824000 27 Hidden NTFS WinRE /dev/sda2 * 27650048 27854847 102400 7 HPFS/NTFS/exFAT /dev/sda3 27854848 976771119 474458136 7 HPFS/NTFS/exFAT I plug in the usb: [georgemauer@ubuntu:~]$ tail -f /var/log/syslog ***Snip*** Apr 4 15:01:18 ubuntu wpa_supplicant[1136]: WPA: Group rekeying completed with 00:24:36:ad:e7:3f [GTK=TKIP] Apr 4 15:02:29 wpa_supplicant[1136]: last message repeated 3 times Apr 4 15:02:29 ubuntu kernel: [22122.788133] usb 2-1: new high speed USB device number 13 using ehci_hcd Apr 4 15:02:29 ubuntu kernel: [22122.923873] scsi10 : usb-storage 2-1:1.0 Apr 4 15:02:29 ubuntu mtp-probe: checking bus 2, device 13: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-1" Apr 4 15:02:30 ubuntu mtp-probe: bus: 2, device: 13 was not an MTP device Apr 4 15:02:30 ubuntu kernel: [22123.926154] scsi 10:0:0:0: Direct-Access GENERIC USB Mass Storage 1.00 PQ: 0 ANSI: 2 Apr 4 15:02:30 ubuntu kernel: [22124.105118] sd 10:0:0:0: Attached scsi generic sg1 type 0 Apr 4 15:02:30 ubuntu kernel: [22124.108212] sd 10:0:0:0: [sdb] Attached SCSI removable disk but then: [georgemauer@ubuntu:~]$ ls /mnt -alF (04-04 16:02) total 8 drwxr-xr-x 2 root root 4096 2011-04-21 12:51 ./ drwxr-xr-x 26 root root 4096 2012-03-31 13:16 ../ [georgemauer@ubuntu:~]$ ls /media -alF (04-04 16:03) total 8 drwxr-xr-x 2 root root 4096 2012-04-04 12:18 ./ drwxr-xr-x 26 root root 4096 2012-03-31 13:16 ../ What could be going on and how do I recover my usb key?

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  • New entries on the GRUB

    - by Kiewic
    Hello. I updated my Ubuntu, and after that there were two new lines on my GRUB screen. Ubuntu 9.04, kernel 2.6.28-16-generic Ubuntu 9.04, kernel 2.6.28-16-generic (recovery mode) Ubuntu 9.04, kernel 2.6.28-11-generic Ubuntu 9.04, kernel 2.6.28-11-generic (recovey mode) Ubuntu 9.04, memtest86+ Other operating systems: Microsoft Windows XP Home Edition Do I have two kernels installed? Do the old entries are still useful? Each kernel takes up space? :P And that's not all, when a get into the old version of Ubuntu, the wireless card stops working on any Ubuntu version until I get into Windows and then go back to Ubuntu. Thanks for your help.

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  • Auto-run script when iPad plugged in

    - by oldmankit
    The way that Ubuntu handles documents on the iPad is awesome (without any configuration required). It beats windows, even after you install iTunes. I want to have the documents in certain iPad apps automatically synced into my Dropbox directory whenever the iPad is connected by USB. The syncing is easy; getting the script to run is not. I have already read the information in various (very out-of-date) tutorials. The best I could find was here: http://askubuntu.com/a/25091/16157 I used lsusb, with the following results: Bus 002 Device 012: ID 05ac:12a2 Apple, Inc. (Please note that when an iPad is connected, Ubuntu seems to mount it to two different mount points: one for "Documents" and one for the whole iPad filesystem. They are both mounted in ~/.gvfs) I have created the following file /etc/udev/rules.d/96-ipad_sync.rules ACTION=="add", ATTRS{idVendor}=="05ac", ATTRS{idProduct}=="12a2", RUN+="/home/kit/bin/jobdone2" I want it to run a test script (which sleeps for five seconds then plays an mp3 file. The test script works, and I have typed the location correctly). So far, when I plug the iPad in, nothing happens. Yes, I waited five seconds. This is the output I get from typing udevadm monitor –env KERNEL[29348.114010] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4 (usb) KERNEL[29348.114844] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb) KERNEL[29348.129118] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb) KERNEL[29348.130699] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.0 (usb) KERNEL[29348.130845] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.1 (usb) KERNEL[29348.130909] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.2 (usb) UDEV [29348.163861] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4 (usb) UDEV [29348.170390] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb) UDEV [29348.171521] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.1 (usb) UDEV [29348.172230] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb) UDEV [29348.172890] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.2 (usb) UDEV [29348.175645] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:4.0 (usb)

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  • Copying photos from camera stalls - how to track down issue?

    - by Hamish Downer
    When I copy files from my camera (connected via USB) to the SSD in my laptop a few files get copied and then the copy stalls. I'm not sure why, any ideas or things to investigate appreciated, or bug reports to go and look at. I have read this answer - the camera (Canon 40D in case that matters) mounts fine using gvfs. I can see the photos in Nautilus, or in the terminal (in /run/user/username/gvfs/... ) and I can copy a few photos, but not many. Using the terminal or Nautilus the process hangs until the camera goes to sleep. Digikam fails to copy any at all, as does Rapid Photo Downloader. Shotwell did manage it in the end, but that is very much a work around for me. I have disabled thumbnail generation by nautilus. Load average stays about 1 while this is happening, while CPU usage is half idle, half wait (and a little user/sys for other programs). None of the programs at the top of the cpu list in top are related to copying photos. There is not much in the logs - from /var/log/syslog Dec 2 16:20:52 mishtop dbus[945]: [system] Activating service name='org.freedesktop.UDisks' (using servicehelper) Dec 2 16:20:52 mishtop dbus[945]: [system] Successfully activated service 'org.freedesktop.UDisks' Dec 2 16:21:24 mishtop kernel: [ 2297.180130] usb 2-2: new high-speed USB device number 4 using ehci_hcd Dec 2 16:21:24 mishtop kernel: [ 2297.314272] usb 2-2: New USB device found, idVendor=04a9, idProduct=3146 Dec 2 16:21:24 mishtop kernel: [ 2297.314278] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Dec 2 16:21:24 mishtop kernel: [ 2297.314283] usb 2-2: Product: Canon Digital Camera Dec 2 16:21:24 mishtop kernel: [ 2297.314287] usb 2-2: Manufacturer: Canon Inc. Dec 2 16:21:24 mishtop mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-2" Dec 2 16:21:24 mishtop mtp-probe: bus: 2, device: 4 was not an MTP device This problem has only started recently and I've had all the hardware for ages. I have also recently upgraded to 12.10, though I'm not sure if the problem started when I upgraded or after the upgrade. I also note this similar question but it is currently unanswered and I'm providing more detail

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  • Alsa version numbers not consistent

    - by user69245
    I've recently moved from 10.04 to 12.04 and have problems with crackles on audio when the screen changes (especially obvious in a Skype conversation with video). !!Kernel Information !!------------------ Kernel release: 3.2.0-26-generic-pae Operating System: GNU/Linux Architecture: i686 Processor: i686 SMP Enabled: Yes !!ALSA Version !!------------ Driver version: 1.0.24 Library version: 1.0.25 Utilities version: 1.0.25 Running through the SoundTroubleShooting procedures I got the above details at Step 3. Is the mismatch between the Driver version (1.0.24) and the Library and Utilities versions (1.0.25) the cause of my problem, or should I be looking elsewhere? In answers to the question "Will ALSA 1.0.25 version have time to enter 12.04?" I read that 1.0.25 would be part of the new kernel, but my kernel version appears to be newer than the original release.

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  • Samsung Galaxy S2 ROM compilation error?

    - by Bashir
    I'm running Ubuntu 12.04 X64 and have installed all the tools(Toolchain: arm-2010q1 and Samsung Galaxy S2 source as given Here) to compile a ROM. When I run make Command I'm getting this error: kernel/built-in.o: In function `cpufreq_table_show': cpu_pm.c:(.text+0x39b64): undefined reference to `cpufreq_frequency_get_table' kernel/built-in.o: In function `cpufreq_max_limit_store': cpu_pm.c:(.text+0x39cd4): undefined reference to `omap_cpufreq_max_limit' cpu_pm.c:(.text+0x39d04): undefined reference to `omap_cpufreq_max_limit_free' cpu_pm.c:(.text+0x39d24): undefined reference to `omap_cpufreq_max_limit_free' kernel/built-in.o: In function `cpufreq_min_limit_store': cpu_pm.c:(.text+0x39dd4): undefined reference to `omap_cpufreq_min_limit' cpu_pm.c:(.text+0x39e04): undefined reference to `omap_cpufreq_min_limit_free' cpu_pm.c:(.text+0x39e24): undefined reference to `omap_cpufreq_min_limit_free' make: *** [.tmp_vmlinux1] Error 1

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