2007-11-24 10:04:53 -07:00
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.\"
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.\" Copyright © 2007 Keith Packard.\"
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.\" Permission to use, copy, modify, distribute, and sell this software and its
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.\" documentation for any purpose is hereby granted without fee, provided that
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.\" the above copyright notice appear in all copies and that both that
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.\" copyright notice and this permission notice appear in supporting
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.\" documentation, and that the name of Keith Packard not be used in
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.\" advertising or publicity pertaining to distribution of the software without
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.\" specific, written prior permission. Keith Packard makes no
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.\" representations about the suitability of this software for any purpose. It
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.\" is provided "as is" without express or implied warranty.
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.\"
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.\" KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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.\" INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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.\" EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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.\" CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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.\" DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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.\" TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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.\" PERFORMANCE OF THIS SOFTWARE.
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.\"
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.\"
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.TH XBACKLIGHT __appmansuffix__ __vendorversion__
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.SH NAME
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xbacklight \- adjust backlight brightness using RandR extension
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.SH SYNOPSIS
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.B "xbacklight"
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[-help] [-display \fIdisplay\fP]
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[-get]
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[-set percent]
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[-inc percent]
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[-dec percent]
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.SH DESCRIPTION
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.I Xbacklight
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is used to adjust the backlight brightness where supported. It finds all
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outputs on the X server supporting backlight brightness control and changes
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them all in the same way.
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.IP -get
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Print out the current backlight brightness of each output with such a
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control. The brightness is represented as a percentage of the maximum
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brightness supported.
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.IP "-set \fIpercent\fP"
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Sets each backlight brightness to the specified level.
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.IP "-inc \fIpercent\fP"
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Increases brightness by the specified amount.
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.IP "-dec \fIpercent\fP"
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Decreases brightness by the specified amount.
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.IP -help
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Print out a summary of the usage and exit.
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.IP "-time \fImilliseconds\fP"
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Length of time to spend fading the backlight between old and new value.
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Default is 200.
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.IP "-steps \fInumber\fP"
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Number of steps to take while fading. Default is 20.
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2007-11-24 10:04:53 -07:00
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.SH "SEE ALSO"
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Xrandr(3)
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.SH AUTHORS
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Keith Packard,
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Open Source Technology Center, Intel Corporation.
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