Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? >>Its a new machine. >>I located another machine with exact same hardware, ubuntu build and drivers which is manifesting no problems: therefore this is a hardware bug or at worst a bad interaction of OS with damaged hardware.
On 16 December 2015 at 19:27, Joseph Salisbury < joseph.salisb...@canonical.com> wrote: > Did this issue start happening after an update/upgrade? Was there a > prior kernel version where you were not having this particular problem? > > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v4.4 kernel[0]. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc5-wily > > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu) > Status: Confirmed => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1526657 > > Title: > desktop freeze, htop shows kernel thread at 100% cpu > > Status in linux package in Ubuntu: > Incomplete > > Bug description: > Every few hours the desktop freezes. I can still login via ssh, htop > shows one process running at 100%. The process is shown in red, > indicating a kernel thread. No response to ctrl-alt-f1 or to > service lightdm restart. > > Graphics card is NVIDIA NVS 310. > > I've tried the NVIDIA drivers in various versions up to nvidia- > current, and also nouveau (current bug report is with logfiles etc > generated after a crash while running nouveau). > > Xorg.log shows a seg fault: > > [171809.988] (EE) > [171809.988] (EE) Backtrace: > [171809.988] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fc8b9ccd848] > [171809.988] (EE) 1: /usr/bin/X (0x7fc8b9b24000+0x1ad539) > [0x7fc8b9cd1539] > [171809.988] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 > (0x7fc8b8c20000+0x10340) [0x7fc8b8c30340] > [171809.988] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 > (0x7fc8b763f000+0x97ff0) [0x7fc8b76d6ff0] > [171809.988] (EE) 4: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0x5356) [0x7fc8b2964356] > [171809.988] (EE) 5: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0x57fb) [0x7fc8b29647fb] > [171809.988] (EE) 6: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0x7e22) [0x7fc8b2966e22] > [171809.988] (EE) 7: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0x1186a) [0x7fc8b297086a] > [171809.988] (EE) 8: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0xe236) [0x7fc8b296d236] > [171809.988] (EE) 9: /usr/lib/xorg/modules/libexa.so > (0x7fc8b295f000+0xc028) [0x7fc8b296b028] > [171809.988] (EE) 10: /usr/bin/X (0x7fc8b9b24000+0x133f56) > [0x7fc8b9c57f56] > [171809.988] (EE) 11: /usr/bin/X (0x7fc8b9b24000+0x12a3fe) > [0x7fc8b9c4e3fe] > [171809.988] (EE) 12: /usr/bin/X (0x7fc8b9b24000+0x55f0e) > [0x7fc8b9b79f0e] > [171809.988] (EE) 13: /usr/bin/X (0x7fc8b9b24000+0x59d9a) > [0x7fc8b9b7dd9a] > [171809.988] (EE) 14: /lib/x86_64-linux-gnu/libc.so.6 > (__libc_start_main+0xf5) [0x7fc8b7660ec5] > [171809.988] (EE) 15: /usr/bin/X (0x7fc8b9b24000+0x451ee) > [0x7fc8b9b691ee] > [171809.988] (EE) > [171809.988] (EE) Segmentation fault at address 0x0 > [171809.988] (EE) > Fatal server error: > [171809.988] (EE) Caught signal 11 (Segmentation fault). Server aborting > [171809.988] (EE) > > ProblemType: Bug > DistroRelease: Ubuntu 14.04 > Package: linux-image-3.13.0-71-generic 3.13.0-71.114 > ProcVersionSignature: Ubuntu 3.13.0-71.114-generic 3.13.11-ckt29 > Uname: Linux 3.13.0-71-generic x86_64 > ApportVersion: 2.14.1-0ubuntu3.19 > Architecture: amd64 > AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', > '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', > '/dev/snd/pcmC1D7p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', > '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] > failed with exit code 1: > Date: Wed Dec 16 08:30:46 2015 > DistributionChannelDescriptor: > # This is a distribution channel descriptor > # For more information see > http://wiki.ubuntu.com/DistributionChannelDescriptor > canonical-oem-somerville-precise-amd64-20130203-1 > InstallationDate: Installed on 2015-10-17 (59 days ago) > InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary > 20130203-13:50 > IwConfig: > eth0 no wireless extensions. > > eth1 no wireless extensions. > > lo no wireless extensions. > MachineType: Dell Inc. Precision Tower 7910 > ProcFB: 0 nouveaufb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-71-generic > root=UUID=8fb5292d-6961-420e-ac9b-3f468520a7de ro plymouth:debug splash > quiet drm.debug=0xe > PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No > PulseAudio daemon running, or not running as session daemon. > RelatedPackageVersions: > linux-restricted-modules-3.13.0-71-generic N/A > linux-backports-modules-3.13.0-71-generic N/A > linux-firmware 1.127.19 > RfKill: > > SourcePackage: linux > UpgradeStatus: Upgraded to trusty on 2015-11-02 (43 days ago) > dmi.bios.date: 09/26/2015 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: A09 > dmi.board.name: 0215PR > dmi.board.vendor: Dell Inc. > dmi.board.version: A03 > dmi.chassis.type: 7 > dmi.chassis.vendor: Dell Inc. > dmi.modalias: > dmi:bvnDellInc.:bvrA09:bd09/26/2015:svnDellInc.:pnPrecisionTower7910:pvr:rvnDellInc.:rn0215PR:rvrA03:cvnDellInc.:ct7:cvr: > dmi.product.name: Precision Tower 7910 > dmi.sys.vendor: Dell Inc. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526657/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1526657 Title: desktop freeze, htop shows kernel thread at 100% cpu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526657/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
