I think we can exclude actual crashes here. Although you did experience bug 1897765 in the past, that should be fixed now.
Next is to figure out which freeze it is: "MetaSyncRing: Sync object is not ready" or "Failed to grab accelerators: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface..." So please: 1. Open a Terminal window and run: journalctl -f 2. Reproduce the problem again. 3. Tell/show us what new messages always appear in the Terminal window after the freeze. ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- 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/1908878 Title: [nvidia] gnome shell freezes for a couple of seconds To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1908878/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs