Dual Monitor on XFCE

Setting up 2 monitors for extended use on XFCE4. 

The xrandr command is the one we’ll need today. It is used to set the size, orientation and/or reflection of the outputs for a screen. Show the state of the outputs:

$ xrandr
Screen 0: minimum 320 x 200, current 3600 x 1080, maximum 8192 x 8192
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 disconnected (normal left inverted right x axis y axis)
CRT1 connected 1680x1050+1920+0 (normal left inverted right x axis y axis) 408mm x 255mm
   1680x1050      60.0*+
   1400x1050      60.0  
   1600x900       60.0  
   1360x1024      60.0  
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1280x800       60.0  
   1152x864       60.0     75.0  
   1280x768       60.0  
   1280x720       60.0  
   1024x768       75.0     70.1     60.0  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     67.0     59.9  
CRT2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1400x1050      60.0  
   1600x900       60.0  
   1360x1024      60.0  
   1280x1024      75.0     60.0  
   1440x900       60.0  
   1280x960       75.0     60.0  
   1280x800       59.8  
   1280x768       59.8  
   1280x720       60.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9

We want the smaller screen (CRT1) to be on the right side of the bigger one (CRT2):

$ xrandr --output CRT1 --right-of CRT2

All done. Add the command to “Session and Startup” if you want the screen to be automatically extended on a system start-up.

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