NAME
xgamma - Alter a monitor's gamma correction through
the X server
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
correction of a monitor via the X video mode extension
(XFree86-VidModeExtension).
OPTIONS
- -display display
- This argument allows you to specify the server to connect to;
see
- -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 current
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.
ENVIRONMENT
- DISPLAY
- To get default host and display number.
BUGS
This client changes the internal values of the gamma correction
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