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-VidModeExtension).

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


       -screen screen
	       When multiple displays are configured as a single logical dis-
	       play,  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 components. This
	       argument specifies the gamma correction as a single value.  If
	       no  value for the gamma correction is given xgamma returns the
	       current gamma correction of the display.


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


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


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

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.Org				Version 6.8.2			    xgamma(1)

UNIX/Linux commands referenced on this page:

1. users
2. as
3. play
4. red
5. host
6. display