Introduction to the 'xrandr' Command

Introduction to the Command: xrandr

The xrandr command is a tool to query and configure display devices and settings. It is used to set the size, orientation and/or reflection of the outputs for a screen. It can also be used to set the screen size or enable/disable outputs.

Basic Usage and Syntax

The basic syntax for the xrandr command is as follows:

xrandr [options]

Examples of Common Use Cases

• To list all available outputs:

  xrandr -q

• To set the resolution of an output:

  xrandr --output [output] --mode [width]x[height]

• To enable an output:

  xrandr --output [output] --auto

• To disable an output:

  xrandr --output [output] --off

• To rotate an output:

  xrandr --output [output] --rotate [left/right]

• To set the refresh rate of an output:

  xrandr --output [output] --rate [refresh rate]

Advanced Options and Flags

• To set the position of an output:

  xrandr --output [output] --pos [x]x[y]

• To set the brightness of an output:

  xrandr --output [output] --brightness [value]

• To set the gamma of an output:

  xrandr --output [output] --gamma [red] [green] [blue]

• To set the transform of an output:

  xrandr --output [output] --transform [matrix]

• To set the primary output:

  xrandr --output [output] --primary

• To set the panning of an output:

  xrandr --output [output] --panning [width]x[height]

• To set the underscan of an output:

  xrandr --output [output] --underscan [value]

• To set the scale of an output:

  xrandr --output [output] --scale [x]x[y]

• To set the transform of an output:

  xrandr --output [output] --transform [matrix]

• To set the dithering of an output:

  xrandr --output [output] --dither [value]

• To set the transform of an output:

  xrandr --output [output] --transform [matrix]

• To set the gamma of an output:

  xrandr --output [output] --gamma [red] [green] [blue]

• To set the gamma ramp of an output:

  xrandr --output [output] --gamma-ramp [red] [green] [blue]

• To set the gamma-ramp of an output:

  xrandr --output [output] --gamma-ramp [red] [green] [blue]

• To set the gamma-curves of an output:

  xrandr --output [output] --gamma-curves [red] [green] [blue]

• To set the gamma-curve of an output:

  xrandr --output [output] --gamma-curve [red] [green] [blue]

• To set the gamma-correction of an output:

  xrandr --output [output] --gamma-correction [value]

• To set the gamma-saturation of an output:

  xrandr --output [output] --gamma-saturation [value]

• To set the gamma-contrast of an output:

  xrandr --output [output] --gamma-contrast [value]

Examples in Real-World Scenarios

The xrandr command is often used to configure display devices and settings. For example, it can be used to change the resolution of a monitor, enable/disable outputs, or rotate an output. It can also be used to set the brightness, gamma, or contrast of an output.

Troubleshooting Tips and Potential Errors

When using the xrandr command, it is important to ensure that the correct output is specified. If the wrong output is specified, the command will fail. Additionally, some options may not be supported by all display devices. If an option is not supported, the command will also fail.