This is a deplate of my Viki notes file on XRandR

1.1 Querying information

This was taken  with my ASUS 1015PE Netbook (Alice) hooked up to my LG
wide screen at home on 2011-07-23.

$ xrandr -q

Screen 0: minimum 320 x 200, current 2944 x 1080, maximum 4096 x 4096

LVDS1 connected 1024x600+1920+0 (normal left inverted right x axis y axis) 220mm x 129mm

   1024x600       60.0*+

   800x600        60.3     56.2 

   640x480        59.9 

VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm

   1920x1080      60.0*+

   1680x1050      60.0 

   1280x1024      75.0     60.0 

   1152x864       75.0 

   1024x768       75.1     60.0 

   800x600        75.0     60.3 

   640x480        75.0     60.0 

   720x400        70.1 


LVDS1 is Alice’s display. VGA1 is the monitor hooked up to the VGA
port on the side.

1.2 Positioning monitors


  • xrandr –output M1 –left-of M2 :: M1 is left of M2

  • xrandr –output M1 –right-of M2 :: M1 is right of M2
  • xrandr –output M1 –above M2 :: M1 is above M2
  • xrandr –output M1 –below M2 :: M1 is below M2
  • xrandr –output M1 –same-as M2 :: M1 and M2 mirror each other.

Where M1 and M2 are the short names given from xrandr -q. I assume that

    $ xrandr --output M1 --left-of M2 --output M2 --right-of M1

Is permitted, +/- using two xrandr commands for it, as well as being

1.3 Setting monitor resolutions

    $ xrandr --output NAME --mode SIZExSIZE

Sets the monitor NAME to the given mode.

1.4 Turning monitors on and off

1.4.1 On

    $ xrandr --output WHICH --mode 1024x768

1.4.2 Off

    $ xrandr --output WHICH --off