You are not logged in.
Hi everyone
Lately, after the startup of the system the screen brightness goes to 12 and I can change it using xbacklight.
The screen is bright on the bios and bootloader screen. Also during the system setup. It gets dark when the logind screens shows and after I start my window manager.
I can set the brightness value using xbacklight,nor get its value.
sudo cat /sys/class/backlight/amdgpu_bl1/brightness
gives me 12, even after restart.
I've tried to change the kernel to lts but the issue is still apparent.
This was happening in T14 with AMD GPU.
Last edited by iduoad (2025-01-07 01:21:57)
Offline
Which kernel?
https://bbs.archlinux.org/viewtopic.php?id=302066
Offline
This is happening under: 6.12.7.arch1-1 and linux-lts 6.6.68-1. I will try to downgrade to an older kernel and see what will happen.
Last edited by iduoad (2025-01-02 13:17:39)
Offline
Can you still control the brightness via the sysfs node?
https://wiki.archlinux.org/title/Backli … interfaces
Offline
Yes I can change it using the sysfs node.
Offline
https://wiki.archlinux.org/title/Backlight#xbacklight only has ever worked w/ xf86-video-intel, are you using https://archlinux.org/packages/extra/any/acpilight/ and does that indeed also not work?
Do you lack file access permissions?
Offline
The issue is fixed, thank you so much Seth.
Offline