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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OPTIONS

17       -display display
18               This  argument  allows you to specify the server to connect to;
19               see X(7).
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21       -screen screen
22               When multiple displays are configured as a single logical  dis‐
23               play,  this  option allows you to select the screen you wish to
24               change.
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26       -quiet  Silence the normal output of xgamma
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28       -help   Print out the `Usage:' command syntax summary.
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30       -gamma f.f
31               The gamma correction can either be defined as a  single  value,
32               or  separately  for  the  red,  green and blue components. This
33               argument specifies the gamma correction as a single  value.  If
34               no  value  for the gamma correction is given xgamma returns the
35               current gamma correction of the display.
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37       -rgamma f.f
38               This argument specifies the red component of the gamma  correc‐
39               tion.
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41       -ggamma f.f
42               This  argument  specifies the green component of the gamma cor‐
43               rection.
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45       -bgamma f.f
46               This argument specifies the blue component of the gamma correc‐
47               tion.
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ENVIRONMENT

50       DISPLAY To get default host and display number.
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BUGS

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

61       xvidtune(1)
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AUTHORS

64       Kaleb S. Keithley, X Consortium.
65       David Dawes, David Bateman
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69X Version 11                     xgamma 1.0.1                        xgamma(1)
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