Intel i915 freeze on latest git

[Jesse Barnes]

On Wed, 09 Feb 2011 17:09:10 +0000
Chris Wilson <chris at chris-wilson.co.uk> wrote:

> On Wed, 9 Feb 2011 13:52:38 +0100, Francesco Allertsen <fallertsen at gmail.com> wrote:
> > On Wed, Feb 02, 2011 at 09:59:54AM +0000, Chris Wilson wrote:
> > > Hmm, that was the only change I could spot between the two patches. Care
> > > to disable that function and see what happens? [i.e. put a return before
> > > we write anything to the ring]
> > 
> > Ping?
> 
> I was optimistic that we might spot the real issue... However, you appear
> to be not alone and so I've pushed a disabling patch onto -fixes:
> 
> commit ac66808814036b4c33dd98091b2176ae6157f1a8
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Wed Feb 9 16:15:32 2011 +0000
> 
>     drm/i915: Disable RC6 on Ironlake
>     
>     The automatic powersaving feature is once again causing havoc, with 100%
>     reliable hangs on boot and resume on affected machines.
>     
>     Reported-by: Francesco Allertsen <fallertsen at gmail.com>
>     Reported-by: Gui Rui <chaos.proton at gmail.com>
>     Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28582
>     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> 
> That should work its way upstream shortly.

reverting the cleanup wasn't sufficient?

Francesco, if you revert the cleanup patch you bisected to, what
does /sys/kernel/debug/dri/0/i915_drpc_info report?

-- 
Jesse Barnes, Intel Open Source Technology Center