Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/
With kernel parameter "i915.enable_dpcd_backlight=1". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851833 Title: [Sager Clevo notebook model PB50_70RF,RD,RC] Unable to adjust brightness of backlight To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1851833/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
