From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wilson <chris@chris-wilson.co.uk>
Subject: Re: Intel i915 freeze on latest git
Date: Wed, 09 Feb 2011 17:09:10 +0000
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To: Francesco Allertsen <fallertsen@gmail.com>
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On Wed, 9 Feb 2011 13:52:38 +0100, Francesco Allertsen <fallertsen@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@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@gmail.com>
    Reported-by: Gui Rui <chaos.proton@gmail.com>
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28582
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

That should work its way upstream shortly.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre