Debian and XFCE Dual Monitors

Open up a terminal and type in xrandr. This will output the configuration of the currently connected monitors. Identify the names of your monitors (such as HDMI2, LCD1, VGA1, CRT2 or whatever). In this example we have two monitors, HDMI1 and HDMI2.

Now type in the desired layout:

xrandr --output HDMI2 --left-of HDMI1

The monitors should now be showing your desired screen laytout. If not, play around until you have it.

To make this layout permanent, click on the Start menu > Settings > Session and Startup and then click on the Application Autostart tab. Add a new autostart item and then insert the xrandr command into the Command text field. Now if you restart your settings will be automatically loaded!

References

• http://www.linuxquestions.org/questions/showthread.php?p=4658799