Comment 313 for bug 1140716

I'm seeing this bug, or something like it, on an older chip (G965, desktop version):

Feb 19 22:05:56 muttonhead kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Feb 19 22:05:56 muttonhead kernel: [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Feb 19 22:05:56 muttonhead kernel: [drm:kick_ring] *ERROR* Kicking stuck wait on render ring
Feb 19 22:05:57 muttonhead kernel: [drm:i915_reset] *ERROR* Failed to reset chip.

after which the mouse pointer sticks in one spot (with most other things working), and then when I shut down X, the console fails to appear, requiring a reboot. Not knowing that the given file path was under /sys/kernel, I failed to capture the error state, but will do so next time this happens (which is maybe every other day). This is with a 3.7 kernel (Gentoo); before 3.7, the driver was stable. I don't know what the 'generation' numbers in the driver mean, but I'm guessing that generation 6 is later, so many of the suggested fixes would not make any difference on this machine.