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From: Lubos Kolouch <lubos.kolouch@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0
Date: Sat, 21 Jan 2012 10:32:14 +0000 (UTC)	[thread overview]
Message-ID: <jfe47e$5dn$1@dough.gmane.org> (raw)

Hello,

After upgrading kernel from 3.1.5 to 3.2.0 the notebook cannot wake from
suspend to RAM properly. The problem stays even with 3.3-rc1.

It wakes, but the screen is blank and computer needs to be rebooted.

When woken, computer is working otherwise (can ping it, ssh to it etc.)

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

    drm/i915/dp: Fix the math in intel_dp_link_required

    The previous code was confused about units, which is pretty reasonable
    given that the units themselves are confusing.

    Signed-off-by: Adam Jackson <ajax@redhat.com>
    Signed-off-by: Keith Packard <keithp@keithp.com>

:040000 040000 3c0a0f38fc6482a401340e03fa3fbd687d11eda4
294673b782b3ecc93540f46f7721d385bd30cfac M    drivers


Reproducible: Always

Steps to Reproduce:
1. suspend to RAM
2. start the computer
Actual Results:  
Screen is blank

Expected Results:  
Screen should be normal as before suspend


             reply	other threads:[~2012-01-21 10:35 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-21 10:32 Lubos Kolouch [this message]
2012-01-21 18:15 ` i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 Keith Packard
2012-01-21 18:44   ` Lubos Kolouch
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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