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[Launchpad Bug Tracker <481229@xxxxxxxxxxxxxxxxxx>]

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There is a grave problem with the intel graphics driver in the karmic
koala release. Since karmic was installed, the driver crashes every few
days (with jaunty it was running perfectly stable). The machine itself
remains up and running, but the display is turned permanently off so the
only possibility I see is a remote login to reboot.

In dmesg I found this:

Nov 11 17:07:10 zweistein kernel: [25202.184012] INFO: task i915/1:298 blocked for more than 120 seconds.
Nov 11 17:07:10 zweistein kernel: [25202.184016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 11 17:07:10 zweistein kernel: [25202.184019] i915/1        D c08145c0     0   298      2 0x00000000
Nov 11 17:07:10 zweistein kernel: [25202.184024]  f6be9f04 00000046 f69cf13c c08145c0 f69cf3a8 c08145c0 2bc73da8 000016c0
Nov 11 17:07:10 zweistein kernel: [25202.184031]  c08145c0 c08145c0 f69cf3a8 c08145c0 2bc737ef 000016c0 c08145c0 f64d7100
Nov 11 17:07:10 zweistein kernel: [25202.184037]  f69cf110 f6a6f814 f6a6f818 ffffffff f6be9f30 c056f776 f693d7f0 f6a6f81c
Nov 11 17:07:10 zweistein kernel: [25202.184043] Call Trace:
Nov 11 17:07:10 zweistein kernel: [25202.184051]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
Nov 11 17:07:10 zweistein kernel: [25202.184055]  [<c056f690>] mutex_lock+0x20/0x40
Nov 11 17:07:10 zweistein kernel: [25202.184073]  [<f83d7c0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
Nov 11 17:07:10 zweistein kernel: [25202.184078]  [<c0157a7e>] run_workqueue+0x6e/0x140
Nov 11 17:07:10 zweistein kernel: [25202.184091]  [<f83d7be0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
Nov 11 17:07:10 zweistein kernel: [25202.184095]  [<c0157bd8>] worker_thread+0x88/0xe0
Nov 11 17:07:10 zweistein kernel: [25202.184099]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
Nov 11 17:07:10 zweistein kernel: [25202.184103]  [<c0157b50>] ? worker_thread+0x0/0xe0
Nov 11 17:07:10 zweistein kernel: [25202.184106]  [<c015bf8c>] kthread+0x7c/0x90
Nov 11 17:07:10 zweistein kernel: [25202.184109]  [<c015bf10>] ? kthread+0x0/0x90
Nov 11 17:07:10 zweistein kernel: [25202.184113]  [<c0104007>] kernel_thread_helper+0x7/0x10

ab@zweistein:~$ uname -a
Linux zweistein 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux

The installed version of xserver-xorg-video-intel is 2:2.9.0-1ubuntu2.

Please ask for more information if necessary.

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: Incomplete

-- 
intermittent crashes of display driver with intel GMA
https://bugs.edge.launchpad.net/bugs/481229
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