Just having upgraded several laptops to 19.04 and been hit by this again. Did some more research and revisited my upstream report and suspect this is caused by some interaction with the power manager and possibly systemd-logind (maybe they both try to set DPMS state for lid- close/open events? )
** Also affects: xfce4-power-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759950 Title: Lid-close suspend: blank screen when switching to user session To manage notifications about this bug go to: https://bugs.launchpad.net/light-locker/+bug/1759950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs