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List:       freedesktop-xorg
Subject:    Re: Xorg resolution with VGA Switch
From:       Aurélien PROVIN <aprovin () linux62 ! org>
Date:       2009-05-28 18:14:55
Message-ID: 1243534495.3077.147.camel () luke
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Le mercredi 27 mai 2009 à 08:30 -0700, Aaron Plattner a écrit :
> On Wed, May 27, 2009 at 07:49:18AM -0700, Aurélien PROVIN wrote:
> > Hi,
> > 
> > I bought a VGA switch to switch some devices on one monitor.
> > But resolution of my X session is limited to 1024x768 instead of 1920x1200.
> > If I hotplug the switch when the X session is started in 1920x1200, it works.
> 
> It sounds like the switch is preventing the hardware from reading the
> EDID from the monitor.  Check /var/log/Xorg.0.log for warnings to that
> effect.
> 
> If that is the case, then your best bet might be to save the EDID to a
> file by clicking the "Acquire EDID" button in nvidia-settings when the
> monitor is connected directly, then feed it back to the driver by
> using the "CustomEDID" option in /etc/X11/xorg.conf.  See the README
> for more details on how to do that.
> 
> Please direct further questions to linux-bugs@nvidia.com.
> 
> Hope that helps!
> -- Aaron

There were many warnings in Xorg.log about EDID
So I used the Nvidia utility to create edid.bin and modify my xorg.conf.

It works perfectly !

Many thanks Aaron and Barry

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