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Message-ID: <AANLkTi=PEhcFYy7Q8e2Dj9p60x2wc=D7vMzR=btEGeUc@mail.gmail.com>
Date:	Sun, 6 Feb 2011 22:51:00 +0800
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>
Cc:	Takashi Iwai <tiwai@...e.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Len Brown <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Commit 500f7147cf5bafd139056d521536b10c2bc2e154 breaks _resume_

On Sun, Feb 6, 2011 at 10:47 PM, Chris Wilson <chris@...is-wilson.co.uk> wrote:
> On Sun, 6 Feb 2011 22:01:22 +0800, Jeff Chua <jeff.chua.linux@...il.com> wrote:
>> It's the commit below. I've checked it twice. Reverting it solves the
>> problem. Suspend to Ram ok. Upon resume, screen is blank. Keyboard
>> hangs. Had to do a hard reset.
>
>> >> commit 500f7147cf5bafd139056d521536b10c2bc2e154
>> >> Author: Chris Wilson <chris@...is-wilson.co.uk>
>> >> Date:   Mon Jan 24 15:14:41 2011 +0000
>> >>
>> >>     drm/i915: Reset state after a GPU reset or resume
>
> Makes no difference to my x201s.
>
> I would have thought a bisection would have resulted in either
> f3269058e7a80083dcdf89698bfcd1a6c6f8fd12 or
> 5d1d0cc87fc0887921993ea0742932e0c8adeda0
>
> Can you try reverting those two to see if either of those is the true
> culprit?

You're too fast. It's the commit below.

commit 5d1d0cc87fc0887921993ea0742932e0c8adeda0
Author: Chris Wilson <chris@...is-wilson.co.uk>
Date:   Mon Jan 24 15:02:15 2011 +0000

    drm/i915: Reset crtc after resume

    Based on a patch by Takashi Iwai.

    Reported-by: Matthias Hopf <mat@...opf.de>
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=27272
    Tested-by: Takashi Iwai <tiwai@...e.de>
    Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>


Thanks,
Jeff.
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