I had the same issue w/ the nvidia proprietary driver. Nouveau can change the screen brightness but will flicker while changing brightness until you also use the "acpi_backlight=vendor" parameter (or "acpi_backlight=none"
Before the changes setting brightness before logging in works smooth, afterwards not at all or with issues. After the changes it doesn't work before logging in, but afterwards smoothly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1588304 Title: Laptop brightness not preserved To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1588304/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
