Thanks for the bug report. Next time the problem happens, please open a terminal (Ctrl+Alt+T) and run:
journalctl -b0 > journal.txt and attach the resulting text file here. I am wondering if this might be bug 1968040. ** Package changed: xorg (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- 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/2000835 Title: After resuming work, only the external screen works. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2000835/+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