From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Airlie <airlied@redhat.com>
Subject: Re: [Intel-gfx] [PATCH] drm: Hold the mode mutex whilst probing
	for sysfs status
Date: Wed, 16 Mar 2011 09:00:33 +1000
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To: Julien Cristau <jcristau@debian.org>
Cc: Paul Menzel <paulepanter@users.sourceforge.net>, intel-gfx@lists.freedesktop.org, stable@kernel.org, dri-devel@lists.freedesktop.org
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On Tue, 2011-03-15 at 13:31 +0100, Julien Cristau wrote:
> On Tue, Mar 15, 2011 at 11:40:00 +0000, Chris Wilson wrote:
> 
> > [Digression: what is upowerd doing reading those power hungry files?]
> > 
> Apparently, checking "docked" status every 30 seconds, by reading the
> status of drm outputs.  Where "docked" means "more than one output
> connected".  Yes, it's silly.
> 
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=613745
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=618329
> 

Its also now disabled by default upstream.

I think he was using an 965 or GM45 laptop that seemed to not report
output changes properly.

Dave.