[Intel-gfx] [PATCH] drm: Hold the mode mutex whilst probing for sysfs status

Dave Airlie airlied at redhat.com
Tue Mar 15 16:00:33 PDT 2011

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.


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