Arch Linux

digitalone

Member

Registered: 2011-08-19

Posts: 351

Kernel 5.7 does not restore backlight on ATI Radeon card

Today I switched to kernel 5.7 and I noticed that backlight is not restored at startup on my laptop.

I have an old Radeon card with AMDGPU driver.

ls /sys/class/backlight/
amdgpu_bl0

Is this a known bug? Looking at the boot log no errors are shown relating to backlight systemd service. The service shows no errors even when I look at its status. Simply the service is not invoked and the backlight is not restored at the previous state.

Reverting to 5.6 fixes the issue.

Last edited by digitalone (2020-06-25 05:21:18)