Please try adding this to /etc/environment: MUTTER_DEBUG_FORCE_KMS_MODE=simple
and then reboot. If the problem keeps happening then next time it does, please run: journalctl -b0 > journal.txt journalctl -b-1 > prevjournal.txt and attach the resulting text files here. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2138173 Title: blank screen when external monitor is not connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2138173/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
