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xgamma(1)						xgamma(1)

NAME
       xgamma - Alter a monitor's gamma correction for XFree86

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 correc-
       tion of a monitor via the  XFree86  X  server  video  mode
       extension (XFree86-VidModeExtension).

OPTIONS
       -display display
	       This  argument allows you to specify the server to
	       connect to; see X(1).

       -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 components. This argument specifies the gamma
	       correction  as a single value. If no value for the
	       gamma correction is given xgamma returns the  cur-
	       rent gamma correction of the display.

       -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.

X Version 11		Release 6.4				1

xgamma(1)						xgamma(1)

ENVIRONMENT
       DISPLAY To get default host and display number.

BUGS
       This client changes the internal values of the gamma  cor-
       rection	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		Release 6.4				2

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