xgamma(1)                                                                                                              xgamma(1)



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

SYNOPSIS
       xgamma [-display display] [-screen screen] [-quiet] [-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-Vid-
       ModeExtension).

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

       -gamma f.f
               The gamma correction can either be defined as a single value, or separately for the red, green  and  blue  compo-
               nents. 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
       respected depends on the video drivers.

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

SEE ALSO
       xvidtune(1)

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



X Version 11                                              xgamma 1.0.4                                                 xgamma(1)