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
redundant.
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