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Xrandr

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Man page:xrandr

Usage

Run the program without options to see the list of available outputs.

shell

xrandr OPTIONS

Option	Description
`--output`	Selects an output to reconfigure.
`--auto`	Enable output using their first preferred mode.
`--left-of`	Position the output to the left of another output.
`--right-of`	Position the output to the right of another output.
`--above`	Position the output above of another output.
`--below`	Position the output bellow of another output.
`--same-as`	Set both outputs to show the same content.
`--brightness`	Multiply the gamma values to specified floating value.
`--off`	Disables the output.
`--primary`	Set the output as primary.

Extend screens:

shell

xrandr --output HDMI-1 --auto --right-of eDP-1

Only one monitor:

shell

xrandr --output eDP-1 --off --output HDMI-1 --auto --primary
xrandr --output eDP-1 --auto --primary --output HDMI-1 --off

Disable HDMI:

shell

xrandr --output HDMI-1 --off