From: Lubos Kolouch <lubos.kolouch@gmail.com>
To: Keith Packard <keithp@keithp.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0
Date: Sat, 21 Jan 2012 19:44:53 +0100 [thread overview]
Message-ID: <20120121184453.GA2698@nbgentoo> (raw)
In-Reply-To: <86mx9gkjlv.fsf@sumi.keithp.com>
On Sat, Jan 21, 2012, 10:15:24, Keith Packard wrote:
> On Sat, 21 Jan 2012 10:32:14 +0000 (UTC), Lubos Kolouch <lubos.kolouch@gmail.com> wrote:
>
> > I git bisected it to commit
> > cd9dde44f47501394b9f0715b6a36a92aa74c0d0 is the first bad commit
> > commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0
> > Author: Adam Jackson <ajax@redhat.com>
> > Date: Fri Oct 14 12:43:49 2011 -0400
>
> Did you try reverting this single commit on top of 3.3-rc1?
>
> And, can you collect the dmesg output with the kernel parameter drm.debug=0xe
> added to the boot line, both messages at boot time *and* messages during
> resume would be needed. If it works at boot time, I'm quite surprised it
> somehow doesn't work at resume...
I tried now and when I revert this line :
- return (pixel_clock * bpp + 7) / 8;
+ return (pixel_clock * bpp + 9) / 10;
resume works OK for me with 3.3-rc1.
Before change (failed)
----------------------
dmesg after boot - http://paste.pocoo.org/show/538343/
dmesg after failed resume - http://paste.pocoo.org/show/538344/
After change (OK)
-----------------
dmesg after boot - http://paste.pocoo.org/show/538345/
dmesg after OK resume - http://paste.pocoo.org/show/538346/
Luboš Kolouch
next prev parent reply other threads:[~2012-01-21 18:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-21 10:32 i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 Lubos Kolouch
2012-01-21 18:15 ` Keith Packard
2012-01-21 18:44 ` Lubos Kolouch [this message]
2012-01-21 20:53 ` Keith Packard
2012-01-22 10:29 ` Lubos Kolouch
2012-01-23 4:00 ` Keith Packard
2012-01-23 6:33 ` Lubos Kolouch
2012-01-26 7:37 ` Keith Packard
2012-01-27 10:14 ` Lubos Kolouch
2012-01-27 18:57 ` Keith Packard
2012-01-31 22:39 ` Joseph Salisbury
2012-02-07 2:31 ` Keith Packard
2012-01-21 18:51 ` Lubos Kolouch
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