Created attachment 125712 [details]
GPU crash dump from /sys/class/drm/card0/error
During using the Google Chrome on Ubuntu 14.04/64 I often experience this error:
Aug 12 03:28:56 * kernel: [105286.318002] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring
Aug 12 03:28:56 * kernel: [105286.318007] [drm] GPU crash dump saved to /sys/class/drm/card0/error
Aug 12 03:28:56 * kernel: [105286.318008] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
Aug 12 03:28:56 * kernel: [105286.318009] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
Aug 12 03:28:56 * kernel: [105286.318010] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
Aug 12 03:28:56 * kernel: [105286.318010] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
Doing as suggested: filing new bug.
Mostly this appears after heavy Adobe/Pepper flash usage, but not always.
*** This bug has been marked as a duplicate of bug 54226 ***