[Intel-gfx] gen6 (SNB) GPU still stalling besides latest patches

[Ted Phelps]

Jesse Barnes writes:
> > [Note to self: submit a bug report]
> 
> Please do; and please try to confirm that your GPU hangs are really rc6
> related.  RC6 provides a huge (multiple Watt) power savings, and we
> really want it to be robust.

Done: BZ#38567.  I'd love to save those watts, so please let me know if
there's anything else I can do to help diagnose the issue.

Thanks,
-Ted