That's a good point. A few people are finding buggy extensions (especially dash-to-dock) are causing a crash on screen lock, which causes a blink and the lock to fail. That's mostly covered by bug 1877774.
So yes, please do make sure you remove all your extensions as part of the testing process. ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880337 Title: Screen lock won't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1880337/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs