1XBACKLIGHT(1) General Commands Manual XBACKLIGHT(1)
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6 xbacklight - adjust backlight brightness using RandR extension
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9 xbacklight [-help] [-display display] [-get] [-set percent] [-inc per‐
10 cent] [-dec percent]
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13 Xbacklight is used to adjust the backlight brightness where supported.
14 It finds all outputs on the X server supporting backlight brightness
15 control and changes them all in the same way.
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17 -get Print out the current backlight brightness of each output with
18 such a control. The brightness is represented as a percentage of
19 the maximum brightness supported.
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21 -set percent
22 Sets each backlight brightness to the specified level.
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24 -inc percent
25 Increases brightness by the specified amount.
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27 -dec percent
28 Decreases brightness by the specified amount.
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30 -help Print out a summary of the usage and exit.
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32 -version
33 Print out the program version and exit.
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35 -time milliseconds
36 Length of time to spend fading the backlight between old and new
37 value. Default is 200.
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39 -steps number
40 Number of steps to take while fading. Default is 20.
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43 Xrandr(3)
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46 Keith Packard, Open Source Technology Center, Intel Corporation.
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50X Version 11 xbacklight 1.2.2 XBACKLIGHT(1)