There are no error in 18.10, it seems similar to https://gitlab.gnome.org/GNOME/gnome-control-center/issues/93 which was fixed there
** Changed in: gnome-control-center (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1729968 Title: /usr/bin/gnome-control- center:11:g_type_check_instance_cast:device_ethernet_refresh_ui:g_closure_invoke:signal_emit_unlocked_R:g_signal_emit_valist To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1729968/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs