kernel-packages team mailing list archive

[Alberto Sentieri <22t@xxxxxxxxxxxx>]

I have exactly the same problem in both an Ubuntu 14.04 that I use at
work and a Debian Jessie that I use at home, and the software is up to
date. Both systems have a "VGA compatible controller: NVIDIA Corporation
GF119 [NVS 310] (rev a1)" and two monitors. After the problem shows up,
I can login into my system through ssh, but the console is dead.

The problem never happens when I am using the system, only when the
screen saver takes control and monitors turn off. I am not familiar with
the guts of the screen saver and why the monitors turns off: one
possibility is the video signal going away during the screen save
operation; another is the computer explicitly asking the monitor to turn
off. Anyway, the fact is that the monitor turns off and that may cause
the problem.

I found a work around at work which virtually made the problem go away:
I have the option (on the special monitors I use at work) to never  turn
them off, even when there is no video signal coming from the computer.
When I activate this monitor feature, the problem goes away. At home,
however, my monitors do not have this feature and I have the dead
console problem every few days. At work, in the last 6 months (and after
never turning my monitors off) I have had the dead console problem just
once, and that could be a different problem.

So, my conclusion is that the problem happens exactly when the screen
saver takes control and the monitor turns off. Hope that help you guys
solve the problem. My current Debian kernel version is “Linux version
3.16.0-4-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc version 4.8.4
(Debian 4.8.4-1) ) #1 SMP Debian 3.16.7-ckt20-1+deb8u2 (2016-01-02)”

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
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