i also have this issue. i normally keep my brightness on full.
so then it always gets darker when this occurs. it seems to go to 70% brightness. i quickly put it back to 100% so i dont know if it would continue to darken -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/789346 Title: Screen brighness randomly changes on Lenovo Y560 laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/789346/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs