This bug seems to be related to a kernel problem. Fedora is dealing with the problem as well.
Have a look at these two bug reports: https://bugzilla.redhat.com/show_bug.cgi?id=1067071 and https://bugzilla.redhat.com/show_bug.cgi?id=1093991 ** Also affects: linux Importance: Undecided Status: New ** Bug watch added: Red Hat Bugzilla #1067071 https://bugzilla.redhat.com/show_bug.cgi?id=1067071 ** Bug watch added: Red Hat Bugzilla #1093991 https://bugzilla.redhat.com/show_bug.cgi?id=1093991 -- 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/1307877 Title: Laptop Monitor Brightness reduced to minimum and disabled after disconnection from external monitor. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1307877/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
