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tldr/pages/linux/xbacklight.md
Managor 1f63ed5e22
linux*: refresh old pages part 1 (#16251)
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
2025-04-25 04:34:04 +03:00

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# xbacklight
> Utility to adjust backlight brightness using the RandR extension.
> More information: <https://manned.org/xbacklight>.
- Get the current screen brightness as a percentage:
`xbacklight`
- Set the screen brightness to 40%:
`xbacklight -set {{40}}`
- Increase current brightness by 25%:
`xbacklight -inc {{25}}`
- Decrease current brightness by 75%:
`xbacklight -dec {{75}}`
- Increase backlight to 100%, over 60 seconds (value given in ms), using 60 steps:
`xbacklight -set {{100}} -time {{60000}} -steps {{60}}`