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[Bug 481349] Re: Karmic: intel i915 crash (locked up - had to power off)

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 09 Feb 2010 20:14:15 -0000
Reply-to: Bug 481349 <481349@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Description changed:

  Binary package hint: xorg
  
  Hi.
  
  After leaving my machine on over lunch (1hr) when I came back the
  machine had locked up, there was no display and I couldn't access a
  Console screen (ctrl+alt+F2, etc)
  
  I had to power off / on .
  
  I do have an opengl screen saver (which had in the past been fine)
  
  syslog shows the following:-
  -----------------------------------
  
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432027] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432031] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432037]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432052]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432060] Call Trace:
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432072]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432076]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432138]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432144]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432148]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432152]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432155]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:37:18 morgan-desktop kernel: [16560.432159]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432028] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432038]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432060] Call Trace:
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432071]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432076]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432136]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432141]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432145]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432152]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:39:18 morgan-desktop kernel: [16680.432157]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432032] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432039] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432042] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432048]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432057]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432063]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432070] Call Trace:
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432082]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432087]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432117]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432124]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432140]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432146]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432150]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432155]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432158]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432162]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:41:18 morgan-desktop kernel: [16800.432167]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432023] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432029] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432039]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432060] Call Trace:
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432073]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432136]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432141]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432145]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432152]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:43:18 morgan-desktop kernel: [16920.432157]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432023] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432029] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432033] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432039]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432047]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432054]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432061] Call Trace:
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432073]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432107]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432115]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432132]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432138]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432143]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432147]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432150]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432154]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:45:18 morgan-desktop kernel: [17040.432158]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432028] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432038]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432060] Call Trace:
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432072]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432136]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432141]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432145]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432152]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:47:18 morgan-desktop kernel: [17160.432157]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432028] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432038]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432060] Call Trace:
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432073]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432115]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432137]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432142]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432146]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432153]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:49:18 morgan-desktop kernel: [17280.432157]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432023] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432029] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432033] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432039]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432047]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432054]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432061] Call Trace:
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432073]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432107]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432115]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432132]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432137]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432142]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432146]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432150]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432154]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:51:18 morgan-desktop kernel: [17400.432158]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432028] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432038]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432060] Call Trace:
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432073]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432136]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432141]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432145]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432152]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:53:18 morgan-desktop kernel: [17520.432157]  [<c0104007>] kernel_thread_helper+0x7/0x10
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432022] INFO: task i915/0:259 blocked for more than 120 seconds.
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432028] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432032] i915/0        D c08145c0     0   259      2 0x00000000
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432038]  f6b15f04 00000046 f6af3efc c08145c0 f6af4168 c08145c0 399d6969 00000ee2
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432046]  c08145c0 c08145c0 f6af4168 c08145c0 399d5ab3 00000ee2 c08145c0 f402ee00
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432053]  f6af3ed0 f68f8814 f68f8818 ffffffff f6b15f30 c056f776 c0748e80 f68f881c
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432060] Call Trace:
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432072]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432077]  [<c056f690>] mutex_lock+0x20/0x40
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432106]  [<f824ec0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432114]  [<c0157a7e>] run_workqueue+0x6e/0x140
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432131]  [<f824ebe0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432136]  [<c0157bd8>] worker_thread+0x88/0xe0
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432141]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432146]  [<c0157b50>] ? worker_thread+0x0/0xe0
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432149]  [<c015bf8c>] kthread+0x7c/0x90
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432153]  [<c015bf10>] ? kthread+0x0/0x90
  Nov 12 13:55:18 morgan-desktop kernel: [17640.432158]  [<c0104007>] kernel_thread_helper+0x7/0x10
  
  ProblemType: Bug
  Architecture: i386
  CurrentDmesg:
   [   16.607226] eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
   [   27.136031] eth0: no IPv6 routers present
   [   32.789044] [drm] DAC-6: set mode  1b
  Date: Thu Nov 12 14:25:13 2009
  DistroRelease: Ubuntu 9.10
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  MachineType: FUJITSU SIEMENS EDITION P
  Package: xorg 1:7.4+3ubuntu7
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-14-generic root=UUID=1af610fd-6372-4509-9250-680c3fa36200 ro quiet splash
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
  RelatedPackageVersions:
   xserver-xorg 1:7.4+3ubuntu7
   libgl1-mesa-glx 7.6.0-1ubuntu4
   libdrm2 2.4.14-1ubuntu1
   xserver-xorg-video-intel 2:2.9.0-1ubuntu2
   xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
  SourcePackage: xorg
  Uname: Linux 2.6.31-14-generic i686
  XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
  XsessionErrors:
   (gnome-settings-daemon:1692): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
   (nautilus:1725): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
   (polkit-gnome-authentication-agent-1:1736): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
  dmi.bios.date: 05/11/2006
  dmi.bios.vendor: FUJITSU SIEMENS // Phoenix Technologies Ltd.
  dmi.bios.version: 5.00 R1.23.2420
  dmi.board.name: D2420
  dmi.board.vendor: FUJITSU SIEMENS
  dmi.board.version: S26361-D2420
  dmi.chassis.type: 6
  dmi.chassis.vendor: FUJITSU SIEMENS
  dmi.chassis.version: SCEP2
  dmi.modalias: dmi:bvnFUJITSUSIEMENS//PhoenixTechnologiesLtd.:bvr5.00R1.23.2420:bd05/11/2006:svnFUJITSUSIEMENS:pnEDITIONP:pvr:rvnFUJITSUSIEMENS:rnD2420:rvrS26361-D2420:cvnFUJITSUSIEMENS:ct6:cvrSCEP2:
  dmi.product.name: EDITION P
  dmi.sys.vendor: FUJITSU SIEMENS
  fglrx: Not loaded
  system:
   distro:             Ubuntu
   architecture:       i686kernel:             2.6.31-14-generic
+ 
+ [lspci]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation 82915G/GV/910GL Integrated Graphics Controller [8086:2582] (rev 04)
+     	Subsystem: Fujitsu Technology Solutions Device [1734:105b]

-- 
Karmic: intel i915 crash (locked up - had to power off)
https://bugs.launchpad.net/bugs/481349
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References

[Bug 481349] [NEW] Karmic: intel i915 crash (locked up - had to power off)
From: yossarian_uk, 2009-11-12