Yes that probably eliminates Mutter from the equation. Sounds more likely to be a kernel regression or something in between like gnome- settings-daemon.
** Also affects: gnome-settings-daemon (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/1962276 Title: [jammy] Laptop monitor does not turn off/disconnect when the lid is closed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1962276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs