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[HOWTO] Adjust the screen backlight (nVidia)
Posted: 25 Aug 2013, 15:52
by tome
Add the following kernel parameter in your bootloader:
and set your brightness with:
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echo 100 > /sys/class/backlight/nv_backlight/brightness
replace 100 with number 1 - 100 (don't use 0).
[HOWTO] Adjust the screen backlight (nVidia)
Posted: 04 Jul 2020, 17:25
by hope
Thanks for the excellent code! The same code works for me without putting any parameter inside a bootlader, I just used
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echo 200 > /sys/class/backlight/intel_backlight/brightness
command works. Actually I used more than 100 without any problems since 100 makes my screen relatively darker than I expected. Maybe vendor to vendor limits changes ? Actually there is a file under which shows the maximum brightness value under the same folder which is max_brightness. I think you can increase the value 1 less than the that maximum value in safety.
[HOWTO] Adjust the screen backlight (nVidia)
Posted: 19 Feb 2021, 21:43
by hope
Actually,
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xrandr --output <screen-name> --brightness 0.5
will do the same job. (0.5 at the reduces backlight to 50 percent and you can find your screen-name by typing xrandr. Just before command itself, there are the name of the connectors which are your sceen-names, select the connected ones).