xgamma
(1)
Name
xgamma - Alter a monitor's gamma correction through the X
server
Synopsis
/usr/bin/xgamma [-display display] [-screen screen] [-quiet]
[-gamma f.f | [[-rgamma f.f] [-ggamma f.f] [-bgamma f.f]]]
Description
User Commands xgamma(1)
NAME
xgamma - Alter a monitor's gamma correction through the X
server
SYNOPSIS
/usr/bin/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 X video mode extension
(XFree86-VidModeExtension).
Note that the xgamma utility is obsolete and deficient,
xrandr should be used with drivers that support the XRandr
extension.
If no value for the gamma correction is given via the -gamma
or -rgamma/-ggamma/-bgamma options, xgamma prints the cur-
rent gamma correction of the display.
OPTIONS
-display display
This argument allows you to specify the server to
connect to; see X(5).
-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 sin-
gle value, or separately for the red, green and blue
components. This argument specifies the gamma cor-
rection as a single value.
-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 Last change: xgamma 1.0.5 1
User Commands xgamma(1)
ENVIRONMENT
DISPLAY To get default host and display number.
BUGS
This client changes the internal values of the gamma correc-
tion 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), xrandr(1)
AUTHORS
Kaleb S. Keithley, X Consortium.
David Dawes, David Bateman
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |x11/x11-server-utilities |
+-----------------------------+-----------------------------+
|Interface Stability |Volatile |
+-----------------------------+-----------------------------+
X Version 11 Last change: xgamma 1.0.5 2