My installation with mainline 5.7.0 uses /sys/class/backlight/amdgpu_bl0/brightness and it works partly, but not perfect. Screen reacts for values from 123 to 255... Have you executed "update-grub" and running the correct kernel (check with uname -r)?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881462 Title: Brightness settings don't work on Lenovo Ideapad 5 15ARE05 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881462/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
