Arch Linux

anonnonnon

Member

Registered: 2024-11-15

Posts: 2

[Solved]No outputs have backlight property [Solved]

Hello.

 xbacklight 

gives

 No outputs have backlight property 

I made a file /etc/X11/xorg.conf.d/20-amdgpu.conf (the folder was empty) with the following content:

Section "OutputClass"
        Identifier "AMD"
        MatchDriver "amdgpu"
        Driver "amdgpu"
        Option "Backlight" "amdgpu_bl1"
EndSection
 

I also tried "/sys/class/backlight/amdgpu_bl1" instead of just "amdgpu_bl1" but  it's all the same.

I still can change brightness as a root (echoing number here /sys/class/backlight/amdgpu_bl1/brightness ) but I want to be able to do this without even sudo.

Last edited by anonnonnon (2024-11-15 18:46:02)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,289

Re: [Solved]No outputs have backlight property [Solved]

Remove all of that and remove xbacklight and if you are dead tied to the xbacklight syntax install acpilight, add yourself to the video group, and use the xbacklight drop-in of acpilight.

The original xbacklight relies on a xorg property that was only implemented on xf86-video-intel, use literally any other option from https://wiki.archlinux.org/title/Backli … _utilities

Last edited by V1del (2024-11-15 18:21:31)

anonnonnon

Member

Registered: 2024-11-15

Posts: 2

Re: [Solved]No outputs have backlight property [Solved]

Remove all of that and remove xbacklight and if you are dead tied to the xbacklight syntax install acpilight, add yourself to the video group, and use the xbacklight drop-in of acpilight.

The original xbacklight relies on a xorg property that was only implemented on xf86-video-intel, use literally any other option from https://wiki.archlinux.org/title/Backli … _utilities

Thanks, with acpilight it works perfectly.