Well, using these steps to reproduce with a live CD, I went all the way back to 12.0.4.3 LTS. Same thing happened. Since I know for a fact that version worked properly for at least a year, I sadly conclude some hardware part must have died.
Unless you want me to do more debugging, you can close this ticket. -- 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/1247624 Title: Laptop screen is turned off, needs shutdown to work again To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1247624/+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