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

[Jesse Barnes]

On Monday, November 24, 2008 11:13 am Bernhard Schmidt wrote:
> 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!

Excellent, thanks for confirming.  I just pinged the maintainer, hopefully we 
can get this patch pushed quickly.

-- 
Jesse Barnes, Intel Open Source Technology Center

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