OK. My best guess is still bug 1754693, which doesn't yet have an 18.04 fix.
In the meantime, please: * Ensure you have no gnome-shell extensions installed (except for the two default Ubuntu ones). Please uninstall all others and tell us if that fixes the problem. * Attach a full copy of the log mentioning "gnome-shell[22505]: segfault" etc. ** Tags added: bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1817682 Title: Ubuntu 18.04 interface freeze - during video call or screen sharing (using Slack or Zoom) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1817682/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs