It sounds like you might have hit a gnome-shell crash, but we can't debug the issue without any details of what/where crashed.
Please have a look in /var/crash/ and for each .crash file run something like: ubuntu-bug /path/to/file.crash ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete ** Tags added: black-screen -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1710350 Title: black screen after suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1710350/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs