linux-kernel - Re: 2.6.33-rc8 regression on i915: resume from hibernate locks up every 2nd time

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Date:	Wed, 17 Feb 2010 22:10:32 +0000
From:	Pedro Ribeiro <pedrib@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org
Subject: Re: 2.6.33-rc8 regression on i915: resume from hibernate locks up 
	every 2nd time

2010/2/17 Rafael J. Wysocki <rjw@...k.pl>:
> On Wednesday 17 February 2010, Rafael J. Wysocki wrote:
>> On Wednesday 17 February 2010, Pedro Ribeiro wrote:
>> > Hi,
>> >
>> > commit 84b79f8d2882b0a84330c04839ed4d3cefd2ff77 (drm/i915: Fix crash
>> > while aborting hibernation) introduced two new issues which were not
>> > present in 2.6.33-rc7:
>> >
>> > - every second resume from hibernate results in a blank screen
>> > - the annoying flash at the end of atomic copy/restore during the
>> > hibernate process is back (present in kernels < 2.6.33)
>> >
>> > The first issue is serious, the second is just an annoyance.
>>
>> The second one is an expected price of fixing the aborted hibernation
>> regression.
>>
>> The first one shouldn't happen, though.
>>
>> I'll see if I can reproduce that locally.
>
> No, I can't.
>
> Is the driver compiled directly into the kernel or modular?
>
> Rafael
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The driver is modular.
And sorry, I forgot to tell you I'm using TuxOnIce, it certainly makes
a difference.

However, every since I reverted that commit I've done 10 test
hibernations and no hang so far.

Pedro
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