Strangely, i seem to experience this bug (at least, apport sent me here) most often (not every time) when LibreOffice.org is suggesting a word... On Ubuntu 12.04 testing, up-to-date. A few days ago, this would hang my system, requiring reboot, but now it recovered.
Dmesg output (i915_error_state attached):
[41633.259712] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[41633.259785] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
[41633.285630] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 9872988 at 9872982, next 9872989)
Strangely, i seem to experience this bug (at least, apport sent me here) most often (not every time) when LibreOffice.org is suggesting a word... On Ubuntu 12.04 testing, up-to-date. A few days ago, this would hang my system, requiring reboot, but now it recovered.
Dmesg output (i915_error_state attached):
[41633.259712] [drm:i915_ hangcheck_ elapsed] *ERROR* Hangcheck timer elapsed... GPU hung dri/0/i915_ error_state wait_request] *ERROR* i915_wait_request returns -11 (awaiting 9872988 at 9872982, next 9872989)
[41633.259785] [drm] capturing error event; look for more information in /debug/
[41633.285630] [drm:i915_