Connecting to a projector with XrandR

It’s pretty simple using xrandr. To activate the VGA port just use (I use 1024x768 as an example resolution of the projector.):

xrandr --output VGA1 --mode 1024x768

To set the screen of the notebook to the same resolution use:

xrandr --output LVDS1 --mode 1024x768

For my netbook, which cannot run under more than 1024x600, it’s possible to scale the output to ensure a 1:1 mirroring:

xrandr --output LVDS1 --mode 1024x600 --scale 1x1.28

The posible resolutions and the names of the devices are shown by just:

xrandr