I have the same problem with a T520 on 12.04. A workaround is to switch to a virtual text console (e.g. Control+Alt+1), change the brightness there, and switch back (Control+Alt+7).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1083984 Title: Brightness control doesn't work on Lenovo Thinkpad T530 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1083984/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs