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] [-version] [-gamma
10       f.f | [[-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16       Note  that  the xgamma utility is obsolete and deficient, xrandr should
17       be used with drivers that support the XRandr extension.
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19       If no value for the  gamma  correction  is  given  via  the  -gamma  or
20       -rgamma/-ggamma/-bgamma  options,  xgamma prints the current gamma cor‐
21       rection of the display.
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OPTIONS

24       -display display
25               This argument allows you to specify the server to  connect  to;
26               see X(7).
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28       -screen screen
29               When  multiple displays are configured as a single logical dis‐
30               play, this option allows you to select the screen you  wish  to
31               change.
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33       -quiet  Silence the normal output of xgamma
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35       -help   Print out the `Usage:' command syntax summary.
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37       -version
38               Print out the program version and exit.
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40       -gamma f.f
41               The  gamma  correction can either be defined as a single value,
42               or separately for the red,  green  and  blue  components.  This
43               argument specifies the gamma correction as a single value.
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45       -rgamma f.f
46               This  argument specifies the red component of the gamma correc‐
47               tion.
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49       -ggamma f.f
50               This argument specifies the green component of the  gamma  cor‐
51               rection.
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53       -bgamma f.f
54               This argument specifies the blue component of the gamma correc‐
55               tion.
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ENVIRONMENT

58       DISPLAY To get default host and display number.
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BUGS

61       This client changes the internal values of the gamma correction for the
62       Xserver. Whether or not these values are respected depends on the video
63       drivers.
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65       The gamma values are passed to the Xserver with  3  decimal  places  of
66       accuracy.
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SEE ALSO

69       xvidtune(1), xrandr(1)
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AUTHORS

72       Kaleb S. Keithley, X Consortium.
73       David Dawes, David Bateman
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77X Version 11                     xgamma 1.0.6                        xgamma(1)
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