Manual: xgamma

xgamma(1)					   General Commands Manual					   xgamma(1)

NAME
       xgamma - Alter a monitor's gamma correction through the X server

SYNOPSIS
       xgamma  [-display  display]  [-screen screen] [-quiet] [-version] [-gamma f.f | [[-rgamma f.f] [-ggamma f.f] [-bgamma
       f.f]]]

DESCRIPTION
       xgamma allows X users to query and alter	 the  gamma  correction	 of  a	monitor	 via  the  X  video  mode  extension
       (XFree86-VidModeExtension).

       Note  that  the	xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr
       extension.

       If no value for the gamma correction is given via the -gamma or -rgamma/-ggamma/-bgamma options,	 xgamma	 prints	 the
       current gamma correction of the display.

OPTIONS
       -display display
	       This argument allows you to specify the server to connect to; see X(7).

       -screen screen
	       When  multiple  displays	 are  configured  as  a single logical display, this option allows you to select the
	       screen you wish to change.

       -quiet  Silence the normal output of xgamma

       -help   Print out the `Usage:' command syntax summary.

       -version
	       Print out the program version and exit.

       -gamma f.f
	       The gamma correction can either be defined as a single value, or separately for the red, green and blue	com‐
	       ponents. This argument specifies the gamma correction as a single value.

       -rgamma f.f
	       This argument specifies the red component of the gamma correction.

       -ggamma f.f
	       This argument specifies the green component of the gamma correction.

       -bgamma f.f
	       This argument specifies the blue component of the gamma correction.

ENVIRONMENT
       DISPLAY To get default host and display number.

BUGS
       This  client changes the internal values of the gamma correction for the Xserver. Whether or not these values are re‐
       spected depends on the video drivers.

       The gamma values are passed to the Xserver with 3 decimal places of accuracy.

SEE ALSO
       xvidtune(1), xrandr(1)

AUTHORS
       Kaleb S. Keithley, X Consortium.
       David Dawes, David Bateman

X Version 11						xgamma 1.0.7						   xgamma(1)