Same problem on Ubuntu 13.04
[ 837.379197] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [ 837.379203] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Same problem on Ubuntu 13.04
[ 837.379197] [drm:i915_ hangcheck_ hung] *ERROR* Hangcheck timer elapsed... GPU hung dri/0/i915_ error_state
[ 837.379203] [drm] capturing error event; look for more information in /debug/