[3.4-rc1][Regression][intel] Resume from suspend to disk hangs on restoring backlight state

[Daniel Vetter]

On Wed, Apr 11, 2012 at 21:35, Maciej Rutecki <maciej.rutecki at gmail.com> wrote:
>> > > Patch:
>> > > http://cgit.freedesktop.org/~danvet/drm-intel/commit/?h=drm-intel-fixes
>> > > &id= 55a254ac63a3ac1867d1501030e7fba69c7d4aeb
>> > >
>> > > Please test whether this fixes your issue. You can also try adding
>> > > i915.i915_enable_ppgtt=0 to your kernel cmdline.
>> > >
>> > > Thanks, Daniel
>> >
>> > Patch solves problem.
>> >
>> > Now resume hangs later on another subsystem: wireless :D
>>
>> Woot, I'm off the hook ;-) Thanks for reporting this issue and testing the
>> patch.
>>
>> Yours, Daniel
>
> Seems be resolved in -rc2.

My guess is on the firmware load vs. suspend/resume fix that landed in
-rc2. That one fixed resume on all the machines here, and -rc1 broke
it on a lot of them.
-Daniel
-- 
Daniel Vetter
daniel.vetter at ffwll.ch - +41 (0) 79 364 57 48 - http://blog.ffwll.ch