I have been having this issue when I moved to 14. It worked great in 13. It also happens when I go to system settings and turn it off. If I plug it back in, it stays in dim unmodified state. Then unplug again, it will change back into a correct state.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1271410 Title: screen brightness does not work after removal of second monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1271410/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

