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

[Ingo Molnar]

* Bernhard Schmidt <berni@xxxxxxxxxxxxx> 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!

here it is below plaintext as well, merged up to latest -git.

	Ingo

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