Adding MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 and disabling disable-wakeup-on- lid-switch.service did the trick for me! Thanks!
> Out of curiosity, what package owns /etc/systemd/system/disable- wakeup-on-lid-switch.service ? It's a self-written service that blocks the laptop from waking up when the lid is opened. ** Attachment added: "disable-wakeup-on-lid-switch.service" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1977977/+attachment/5595866/+files/disable-wakeup-on-lid-switch.service -- 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/1977977 Title: Blanked screen doesn't wake up after locking To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1977977/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs