I found a temporary way to control the brightness here: http://bbs.archlinux.org/viewtopic.php?id=73889
To control the brightness, I run "sudo setpci -s 00:02.0 F4.B=??" with ?? ranging from 00 (completely black) to FF (maximum brightness) -- Screen brightness not controllable on Lenovo Ideapad S10-3 https://bugs.launchpad.net/bugs/538256 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