It took a lot longer than normal but I confirmed the bug is still present in 3.5.7.
Linux matt-work 3.5.7-03050708-generic #201303180635 SMP Mon Mar 18 10:36:03 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Mar 28 16:42:33 matt-work kernel: [13712.881340] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 28 16:42:33 matt-work kernel: [13712.881344] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Mar 28 16:42:33 matt-work kernel: [13712.884466] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
It took a lot longer than normal but I confirmed the bug is still present in 3.5.7.
Linux matt-work 3.5.7-03050708- generic #201303180635 SMP Mon Mar 18 10:36:03 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Mar 28 16:42:33 matt-work kernel: [13712.881340] [drm:i915_ hangcheck_ hung] *ERROR* Hangcheck timer elapsed... GPU hung dri/0/i915_ error_state
Mar 28 16:42:33 matt-work kernel: [13712.881344] [drm] capturing error event; look for more information in /debug/
Mar 28 16:42:33 matt-work kernel: [13712.884466] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off