This seems like the same problem I am having. If I allow the display to go to sleep, I cannot get it to come back on. I can change to terminal with Ctrl+Alt+F1 and restart lightdm or just reboot. In the meantime, until this bug is resolved, I have disabled turning the display off to save power.
The display does still go to sleep at the login screen, however, it will come back on from there. -- 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/1507346 Title: Back light off after sleep mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1507346/+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
