lkml.org 
[lkml]   [2011]   [Mar]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Suspend/resume regression in Toshiba A11 since 2.6.34-rc4
Date
On Friday, March 18, 2011, Herton Ronaldo Krzesinski wrote:
> This regression is old, but discovered recently. Since 2.6.34-rc4,
> a Toshiba Tecra A11 machine resumes without video for the first time.
> Here is the strange thing reported, on the first suspend/resume, when
> the machine wakes up the video is blank, but the machine is up (just the
> screen is black). If you suspend again, on second resume the video comes
> back normally.
>
> Helping the reporter bisecting the problem, we narrowed down the bug to
> this commit:
>
> commit ac7729da880e742613129ee6dea0045328670d2d
> Author: Rafael J. Wysocki <rjw@sisk.pl>
> Date: Mon Apr 5 01:43:51 2010 +0200
>
> ACPI / PM: Move ACPI video resume to a PM notifier
>
> And reverting this commit on 2.6.38 still made the problem go away.
> Looking at the commit above I don't saw any problem, and perhaps we have
> some bad bios here which by moving the resume of acpi video later
> triggers this bug. Also strange that on second suspend/resume everything
> is normal... (the regression here is just the video is blank on first
> resume).
>
> I asked the reporter to try to increase brightness logged in remotely
> when the video is blank after first resume, but this didn't have any
> effect.
>
> This was reported in https://bugs.launchpad.net/bugs/719620 (if reading
> I recommend to skip to comment #58 and later), I can't think of any
> solution besides trying to move acpi video resume perhaps back and
> depend on video device being resume first. I asked for more debugging
> information but got nothing unfortunately which could diagnose better
> this...

What graphics driver is used?

Rafael


\
 
 \ /
  Last update: 2011-03-18 23:41    [W:0.042 / U:0.636 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site