Unfortunately that didn't reveal anything because Javascript was idle at the time:
Oct 10 15:25:01 u gnome-shell[4600]: libinput error: event5 - VEN_04F3:00 04F3:31D1 Touchpad: client bug: event processing lagging behind by 47ms, your system is too slow Oct 10 15:25:30 u gnome-shell[4600]: thunderbolt: [TTB3-M202] auto enrollment: yes (allowed: yes) Oct 10 15:26:10 u gnome-shell[4600]: GNOME Shell crashed with signal 5 Oct 10 15:26:10 u gnome-shell[4600]: == Stack trace for context 0x5a45734a80a0 == Oct 10 15:26:10 u gnome-shell[4600]: #0 5a457358fc68 i resource:///org/gnome/shell/ui/init.js:21 (b668fe70bf0 @ 48) ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2084015 Title: gnome-shell has no response when plug-in unauthorized thunderbolt devices To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/2084015/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs