Change display resolution after XRANDR

Olivier Fourdan fourdan at
Wed Mar 24 08:55:47 CET 2010

On Wed, Mar 24, 2010 at 3:36 AM, Fernando Antunes <fs.antunes at> wrote:
> Hi.
> I'm a notebook user and I have a external LCD monitor at work connected
> through the VGA port. I don't have a xorg.config file, so I enable this
> monitor using xranrd :
> xrandr --output LVDS1 --mode 1280x800 --primary
> xrandr --output VGA1 --mode 1280x1024 --above LVDS1
> After that command, my display was enlarged, but XFCE have a lot of problems
> to work on it. Some applications doesn't switch between monitors, maximize
> windows doesn't work, and many others things. I think the problem is XFCE
> doesn't know about the change done by xranrd. If you check
> xfce4-display-settings, the resoluion didn't change and the maximum allowed
> is 1280x800 (LVDS1 - the notebook screen resolution).
> I trying to resolve this changing the XFCE resolution by
> xfconf-query -c displays -p /Default/Screen_0/Resolution -s "new resolution
> AxB". The configuration is changed in the file, but the resolution of the
> screen doesn't.
> Is there a way to force some xfce4 program to reload the new resolution in
> the file and resize the monitor ?

that should work automatically.

Can you build and run the following program and post the output?

That will tell the actual layout as it's seen by the apps.

Oh, and also, please give some details on the version of xfce you run,
the output of "xfwm4 --version" is a start.


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