Acer user can found a workaround here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/489041
-- LCD Brightness won't Change - intel 4 series https://bugs.launchpad.net/bugs/392948 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
