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xbacklight - adjust backlight brightness using
RandR extension
xbacklight [-help] [-display display] [-get] [-set
percent] [-inc percent] [-dec percent]
Xbacklight is used to adjust
the backlight brightness where supported. It finds all outputs on the X
server supporting backlight brightness control and changes them all in
the same way.
- -get
- Print out the current backlight brightness of each output
with such a control. The brightness is represented as a percentage of the
maximum brightness supported.
- -set percent
- Sets each backlight brightness
to the specified level.
- -inc percent
- Increases brightness by the specified
amount.
- -dec percent
- Decreases brightness by the specified amount.
- -help
- Print
out a summary of the usage and exit.
- -time milliseconds
- Length of time to
spend fading the backlight between old and new value. Default is 200.
- -steps
number
- Number of steps to take while fading. Default is 20.
Xrandr(3)
Keith Packard, Open Source Technology Center, Intel Corporation.
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