"some message back to the computer" is probably a hotplug (or unplug) event. That's why the first workaround works for you, because the monitor is no longer doing a logical disconnection when it goes to sleep.
If we could reproduce this reliably in development then it might be possible to just ignore events for a monitor reported as being unplugged while sleeping. Although you'd then have to deliver those events much later on wakeup so that in the case of a real unplug the desktop gets rearranged to match the new layout. We could also just blindly ignore all unplug events if they're suspiciously close to when the monitor was put to sleep. But again, the bug needs to be reproducible in development. Speculation like this is probably better discussed upstream (currently https://gitlab.gnome.org/GNOME/mutter/-/issues/1607) so that all GNOME developers can see it. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1971434 Title: Display powersave only blanks, but does not turn off To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1971434/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
