Touches should never be reaching the external monitor regardless of whether the internal screen is on or off. So we're tracking that as bug 1821933 now.
** Bug watch added: GNOME Bug Tracker #766762 https://gitlab.gnome.org/766762 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1723039 Title: with 2 monitors, touchscreen is not disabled when the internal display is disabled To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1723039/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs