Comment 42 for bug 451518

Upgraded from 9.04 --> 9.10 karmic GPU freezes same as above, with these messages looping in /var/log/messages every two minutes:

May 9 19:57:58 shire kernel: [17640.452040] i915/0 D c081b5c0 0 274 2 0x00000000
May 9 19:57:58 shire kernel: [17640.452047] f6af9f04 00000046 f6b4d81c c081b5c0 f6b4da88 c081b5c0 8513c6a8 00000fd8
May 9 19:57:58 shire kernel: [17640.452055] c081b5c0 c081b5c0 f6b4da88 c081b5c0 8513bf06 00000fd8 c081b5c0 f5e8b500
May 9 19:57:58 shire kernel: [17640.452062] f6b4d7f0 f68fb814 f68fb818 ffffffff f6af9f30 c0574476 c074ee80 f68fb81c
May 9 19:57:58 shire kernel: [17640.452070] Call Trace:
May 9 19:57:58 shire kernel: [17640.452082] [<c0574476>] __mutex_lock_slowpath+0xc6/0x130
May 9 19:57:58 shire kernel: [17640.452087] [<c0574390>] mutex_lock+0x20/0x40
May 9 19:57:58 shire kernel: [17640.452119] [<f814bb3a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
May 9 19:57:58 shire kernel: [17640.452127] [<c0157a2e>] run_workqueue+0x6e/0x140
May 9 19:57:58 shire kernel: [17640.452146] [<f814bb10>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
May 9 19:57:58 shire kernel: [17640.452152] [<c0157b88>] worker_thread+0x88/0xe0
May 9 19:57:58 shire kernel: [17640.452157] [<c015c1d0>] ? autoremove_wake_function+0x0/0x40
May 9 19:57:58 shire kernel: [17640.452162] [<c0157b00>] ? worker_thread+0x0/0xe0
May 9 19:57:58 shire kernel: [17640.452166] [<c015bedc>] kthread+0x7c/0x90
May 9 19:57:58 shire kernel: [17640.452170] [<c015be60>] ? kthread+0x0/0x90
May 9 19:57:58 shire kernel: [17640.452175] [<c0104047>] kernel_thread_helper+0x7/0x10

The keyboard, mouse, and screen are completely unresponsive; however, I am able to ssh into the box, look at the logs, restart the system &etc.

This only seems to happen with the affects running compiz.real and if the gnome-screensaver is running for a while. I have disabled the screen-saver but left compiz running; will let you know.

thanks