Does changing your upower.service file fix the problem? Remove: ProtectKernelTunables=true And add: ProtectKernelTunables=false
If so then this may be related to bug 1796550 and https://gitlab.freedesktop.org/upower/upower/issues/73 ** Also affects: upower (Ubuntu) Importance: Undecided Status: New ** Changed in: upower (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1797862 Title: Cannot turn off keyboard backlight To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1797862/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
