1xgamma(1)                   General Commands Manual                  xgamma(1)
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NAME

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

9       xgamma  [-display  display]  [-screen  screen]  [-quiet]  [-gamma f.f |
10       [[-rgamma f.f] [-ggamma f.f] [-bgamma f.f]]]
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DESCRIPTION

13       xgamma allows X users to query and alter the gamma correction of a mon‐
14       itor via the X video mode extension (XFree86-VidModeExtension).
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16       If  no  value  for  the  gamma  correction  is  given via the -gamma or
17       -rgamma/-ggamma/-bgamma options, xgamma prints the current  gamma  cor‐
18       rection of the display.
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OPTIONS

21       -display display
22               This  argument  allows you to specify the server to connect to;
23               see X(7).
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25       -screen screen
26               When multiple displays are configured as a single logical  dis‐
27               play,  this  option allows you to select the screen you wish to
28               change.
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30       -quiet  Silence the normal output of xgamma
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32       -help   Print out the `Usage:' command syntax summary.
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34       -gamma f.f
35               The gamma correction can either be defined as a  single  value,
36               or  separately  for  the  red,  green and blue components. This
37               argument specifies the gamma correction as a single value.
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39       -rgamma f.f
40               This argument specifies the red component of the gamma  correc‐
41               tion.
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43       -ggamma f.f
44               This  argument  specifies the green component of the gamma cor‐
45               rection.
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47       -bgamma f.f
48               This argument specifies the blue component of the gamma correc‐
49               tion.
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ENVIRONMENT

52       DISPLAY To get default host and display number.
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BUGS

55       This client changes the internal values of the gamma correction for the
56       Xserver. Whether or not these values are respected depends on the video
57       drivers.
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59       The  gamma  values  are  passed to the Xserver with 3 decimal places of
60       accuracy.
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SEE ALSO

63       xvidtune(1)
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AUTHORS

66       Kaleb S. Keithley, X Consortium.
67       David Dawes, David Bateman
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71X Version 11                     xgamma 1.0.4                        xgamma(1)
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