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<H1>xgamma</H1>
Section: User Commands (1)<BR>Updated: xgamma 1.0.6<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
xgamma - Alter a monitor's gamma correction through the X server
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>xgamma</B>
[-display <I>display</I>] [-screen <I>screen</I>] [-quiet] [-version]
[-gamma f.f | [[-rgamma f.f] [-ggamma f.f] [-bgamma f.f]]]
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
<P>
<B>xgamma</B>
allows X users to query and alter the gamma correction of a monitor via
the X video mode extension (XFree86-VidModeExtension).
<P>
Note that the <B>xgamma</B> utility is obsolete and deficient, <B>xrandr</B>
should be used with drivers that support the <B>XRandr</B> extension.
<P>
If no value for the gamma correction is given via the
<I>-gamma</I>
or
<I>-rgamma</I>/<I>-ggamma</I>/<I>-bgamma</I>
options,
<B>xgamma</B>
prints the current gamma correction of the display.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>
<P>
<DL COMPACT>
<DT id="1"><B>-display </B><I>display</I>
<DD>
This argument allows you to specify the server to connect to; see <I><A HREF="/cgi-bin/man/man2html?7+X">X</A>(7)</I>.
</DL>
<P>
<DL COMPACT>
<DT id="2"><B>-screen </B><I>screen</I>
<DD>
When multiple displays are configured as a single logical display, this option
allows you to select the screen you wish to change.
</DL>
<P>
<DL COMPACT>
<DT id="3"><B>-quiet</B>
<DD>
Silence the normal output of
<B>xgamma</B>
</DL>
<P>
<DL COMPACT>
<DT id="4"><B>-help</B>
<DD>
Print out the `Usage:' command syntax summary.
</DL>
<P>
<DL COMPACT>
<DT id="5"><B>-version</B>
<DD>
Print out the program version and exit.
</DL>
<P>
<DL COMPACT>
<DT id="6"><B>-gamma f.f</B>
<DD>
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.
</DL>
<P>
<DL COMPACT>
<DT id="7"><B>-rgamma f.f</B>
<DD>
This argument specifies the red component of the gamma correction.
</DL>
<P>
<DL COMPACT>
<DT id="8"><B>-ggamma f.f</B>
<DD>
This argument specifies the green component of the gamma correction.
</DL>
<P>
<DL COMPACT>
<DT id="9"><B>-bgamma f.f</B>
<DD>
This argument specifies the blue component of the gamma correction.
</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>ENVIRONMENT</H2>
<P>
<DL COMPACT>
<DT id="10"><B>DISPLAY</B>
<DD>
To get default host and display number.
</DL>
<A NAME="lbAG">&nbsp;</A>
<H2>BUGS</H2>
<P>
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.
<P>
The gamma values are passed to the Xserver with 3 decimal places of
accuracy.
<A NAME="lbAH">&nbsp;</A>
<H2>SEE ALSO</H2>
<A HREF="/cgi-bin/man/man2html?1+xvidtune">xvidtune</A>(1),
<A HREF="/cgi-bin/man/man2html?1+xrandr">xrandr</A>(1)
<A NAME="lbAI">&nbsp;</A>
<H2>AUTHORS</H2>
Kaleb S. Keithley, X Consortium.
<BR>
David Dawes, David Bateman
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="11"><A HREF="#lbAB">NAME</A><DD>
<DT id="12"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="13"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="14"><A HREF="#lbAE">OPTIONS</A><DD>
<DT id="15"><A HREF="#lbAF">ENVIRONMENT</A><DD>
<DT id="16"><A HREF="#lbAG">BUGS</A><DD>
<DT id="17"><A HREF="#lbAH">SEE ALSO</A><DD>
<DT id="18"><A HREF="#lbAI">AUTHORS</A><DD>
</DL>
<HR>
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Time: 00:05:30 GMT, March 31, 2021
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