How To Use Multiple Monitors In Xubuntu / Xfce (Extended Display Instead Of Mirror)

In multi monitors setups, Xubuntu / Xfce clones (mirrors) instead of expanding the display to the external monitor. So here are two ways of getting proper multi monitor support in Xfce / Xubuntu.I. Xubuntu 12.10 only: use the Xfce 4.12 PPA to get proper multi-monitor supportXfce 4.11 (Xubuntu 12.10 uses Xfce 4.10 by default) has implemented support for extended desktop mode, so using the Xfce 4.12 PPA in Xubuntu 12.10 (this is a development PPA which provides some development packages), which you might have added already to install Thunar 1.5.x with tabs support, you’ll get proper multi-monitor support by default.Using this PPA, in the Xfce Settings Manager, under “Display”, you can select the position of each monitor (left of, right of, below, above or the same), and if you want to mirror the displays or not:The PPA currently provides Thunar 1.5.x, Xfce4 Settings and Axo development builds. To add the PPA and upgrade these packages in Xubuntu 12.10, use the commands below:sudo add-apt-repository ppa:xubuntu-dev/xfce-4.12sudo apt-get updatesudo apt-get upgradeOnce the packages have been successfully upgraded, open the Settins Manager, and under “Display”, uncheck the “Mirror displays” option to extend your display to the external monitor(s), then select the displays position, etc.II.

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