I have the identical problem on the Dell Vostro 3300 with Geforce 310M. It used to work fine in 10.10.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773710 Title: [Lenovo T420s] Brightness keys make the indicator work, but don't actually dim or brighten the screen -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
