Automagically configuration of external monitor - Possible?

I use my laptop for everything, except server stuff. In the office I have an external monitor I like to use in stead of the laptop screen. Now, using Gnome I have to enable the external monitor, and disable the laptop screen before this works. Is it possible to do this a bit more automagically each time I connect it? Does not need to be gnome specific if there are other ways.
Cheers

Noble wrote:I'm using the intel driver, if that helps.
On a eeepc with the Intel driver I have on my startup script:
CRT=`xrandr | grep "VGA1 connected"`
if [ "x${CRT}x" != "xx" ]; then
   xrandr --output LVDS1 --off --output VGA1 --mode 1680x1050 --pos 0x0 --rotate normal
fi
You will have to find out what is the xrandr output at your system.
This works if the monitor is (or is not) connected, it doesn't try to handle 'hot' connections.
Mektub

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