xrandr supports different resolutions depending on when screen is plugged in

Gene Heskett gene.heskett at verizon.net
Tue Apr 1 12:38:09 PDT 2008

On Tuesday 01 April 2008, Fabien Chaillou wrote:
>i would guess that this is caused by the size of the framebuffer
>allocated at X server startup to the maximum size of your screen.
>Right now it can't be resized on the fly so  you have to provide a
>virtual line in the display section of the server config file :
>something like Virtual 1920 1200
Did you mean:
		Virtual "1680x1050"
to use my current figures?
>Reto Bachmann-Gmür a écrit :
>> Hello
>> I'm getting started with my Dell M1330 laptop with its Intel i810 card
>> with an external screen supporting a resolution of 1920x1200. My goal
>> is to be able to switch monitors without restarting X.
>> The problem is that if the monitor is not plugged in when X is
>> started, "xrandr -q" indicates that the VGA monitor only supports
>> 1280x1024 and "xrandr --output VGA --auto" will set the screen to that
>> resolution. When the monitor is plugged in when X is started the
>> maximum resolution is correctly indicated as 1920x1200 and switching
>> from the built-in screen and resolution to the external one works
>> nicely (using "xrandr --output VGA --off" and "xrandr --output VGA
>> --auto"). Any solution/work-around other than "do not (re)start laptop
>> when the monitor isn't connected"?
>> Versions I'm using:
>> - xorg-server
>> - libXrandr 1.2.1
>> - xrandr 1.2.2
>> Cheers,
>> reto
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Cheers, Gene
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