Re: [Bug #11947] 2.6.28-rc VC switching with Intel graphics broken

[Bernhard Schmidt]

Hello,

> On Monday, November 24, 2008 12:47 am Romano Giannetti (lists) wrote:
> > Rafael J. Wysocki wrote:
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11947
> > > Subject		: 2.6.28-rc VC switching with Intel graphics broken
> > > Submitter	: Romano Giannetti <romano.giannetti@xxxxxxxxx>
> > > Date		: 2008-11-03 12:10 (20 days old)
> > > Handled-By	: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
> > Still with us on -rc6, nasty, reproducible, no clues on what can be.
> >
> > VC switch locks or delay the systems minutes, resuming from suspend locks
> > hard the machine.
> >
> > 2.6.28-rc is unusable here.
> >
> > Jesse, any hints? My suspicion that it can be the same thing happened with
> > bug 10620 is wrong? (It was a very similar error about vblank...)
>
> Just added to the bug, it looks like a DUP of an issue Keith just fixed last 
> week (now to make sure the patch makes it upstream quickly).

I can confirm that, with the patch from 
http://lists.freedesktop.org/archives/intel-gfx/2008-November/000614.html 
applied on top of current git head (rejected hunk in 
drivers/gpu/drm/i915/915_irq.c due to the additional 
dev_priv->irq_mask_reg = ~0; in git between the removed lines, I kept 
it) I can suspend/resume and do a VC switch again.

Big thanks!

Bernhard
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