This appears to fix the issue for me on mantic (23.10) using the mantic- proposed repo.
45.2-0ubuntu5 - for: gir1.2-mutter-13 libmutter-13-0 mutter-common mutter I did have to purge the ppa to get get to install. Maybe I did something to get those vv version pinned. I confirmed that I don't get the strange delay (the display persisted up to 1-2s after I would hit a key sometimes). I also confirmed that I don't see MetaSyncRing messages on this boot. Oh, and I rebooted after installing the packages. ** Tags removed: verification-needed-mantic ** Tags added: verification-done-mantic -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2059847 Title: Input lag or freezes on Nvidia desktops with X11 after logging "MetaSyncRing: Sync object is not ready -- were events handled properly?" To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/2059847/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs