Score:0

Change screen luminosity [Ubuntu Server 22.04.1]

ng flag

I'm trying to change the luminosity of my laptop running ubuntu server. tried using xbacklight -set 30 but it will return RANDR Query Version' returned error -1 still does not change the brightness, any other terminal only way / server way?

Pilot6 avatar
cn flag
I don't think you can change brightness in console ;-)
Nuggy avatar
ng flag
well i hope you can change the screen brightness
Score:0
cn flag

Got the same problem with my ASUS Zenbook UM5302ta running ubuntu 22.04 with i3.

The command I assume should work is xbacklight -d eDP -inc 5 where eDp is the display I'm connected to (output from running xrandr)

What I've discovered is is that I can change value in file /sys/class/backlight/amdgpu_bl0/brightness that actually changes the brightness of the screen.

  • min value - 0
  • max value - content of /sys/class/backlight/amdgpu_bl0/max_brightness

you can get all the information on arch wiki

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