Bug#689268: Intel HD 4000 (Ivy Bridge) graphics freeze

[Riku Voipio <riku.voipio@iki.fi>]

On Wed, Dec 05, 2012 at 07:39:01AM -0800, Jonathan Nieder wrote:
> Riku Voipio wrote:
> > On Wed, Nov 28, 2012 at 07:52:51AM -0800, Jonathan Nieder wrote:
 
> >> If you can bisect to find the first unaffected kernel between 3.2 and
> >> 3.3-rc6 as described at [1], that would be excellent. Thanks much for
> >> your work.
> >
> > I have now been bisecting (I skipped the drm tree reset, this is bisect
> > between 3.2 and 3.3-rc1) for one week, and so far only seen hangs on 
> > on the debian kernel.
 
> Hm, I'm a little confused.  Are you sure 3.3-rc1 is not affected, and if
> not, why bisect between 3.2 and 3.3-rc1 instead of -rc6?  What git tree
> are you using to bisect the Debian kernel?

Now I've had comple of days with the debian 3.2.19-1 and no crashes
either. Sigh, I notice I had "i915.i915_enable_rc6=0 drm.debug=0x06" set
in etc/default/grub.
I remember some crashed with i915.i915_enable_rc6=0, so perhaps it's
the debug prints that drive the timing off enough to hide the crash.

Lets clear the command line and see if I can get crashes back...

Riku