Good news, i find the issue, the problem are the gnome extensions, back up your .local/share/gnome-shell/ data and erase all your extensions, restart the shell and try to lock screen (it works for me).
After, install one by one extensions and, for each, try lock screen since find the buggie extension. -- 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
