Hmm, I think I am still not pretty sure I fully understand the situation here.
So, right after reboot, What's the value of `cat /sys/class/backlight/intel_backlight/brightness`? And the output of `grep . /var/lib/systemd/backlight/*`? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1686268 Title: Backlight brightness level not restored after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686268/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs