Solved the problem by following the accepted comment on this post: https://askubuntu.com/questions/1242110/after-upgrading-to-ubuntu-20-04-lockscreen-not-working `$ sudo dpkg-reconfigure gdm3` -> Choose gdm3 Don't forget to reboot. Also, it seems the error message that the gdm service cannot be started after the reconfigure is normal.
Using lightdm instead of gdm3 is the cause of the problem here as it seems. Of course not a real fix, but a nice workaround. Hope this helps somebody. -- 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/1880785 Title: Cannot enable 'Lock screen on suspend' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1880785/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
