If it's of any help, here's what the terminal tells me the moment the slider disappears:
janne@esprimo:~$ gnome-control-center (gnome-control-center:8314): screen-cc-panel-WARNING **: Error getting brightness: Timeout was reached Let me know if there are more details that can be dug up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/982861 Title: Cannot adjust screen brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/982861/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
