[Intel-gfx] [PATCH 2/4] drm/i915: Push an fbc disable across suspend

[Daniel Vetter]

On Fri, Apr 30, 2010 at 10:33:22AM -0400, Adam Jackson wrote:
> I'm still a little cautious about enabling gen3 fbc again, Jesse made it
> sound like there were stability problems with it outside of suspend.
> Maybe i915.powersave=2 to enable unstable features?

Just for the record, I can shoot down my i945 with fbc enabled with a few
secs of cairo-perf-trace. With or without your patch-series and no
suspend/resume required. Box works flawless with powersave=0. So with the
current code, fbc on gen 3 should definitely be optional, perhaps even
tainting the kernel (so that random gpu hangs suddenly look rather less
random in bug reports).

Yours, Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48