I didn't see any problems logging on with gnome on xorg, or starting the first terminal session.
However, as soon as I started the second terminal, the GTK2/GTK3 error messages poured out. Opening a new tab on the same window does not generate the messages. This sounds like your gnome bug report - it doesn't look like a widget, or an application, but something more fundamental. I wonder why my system even has the i386 packages installed - were they pulled in by an application (such as wine) which isn't installed on my laptop? What is the best way to locate the culprit - I now know it isn't Chrome, thunderbird, nautilus or netbeans. It's hard to believe gnome- terminal is the root cause. ** Attachment added: "journalctl with xorg when starting a second terminal session" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1838919/+attachment/5282548/+files/2019-08-15-xorg-gnome-second-terminal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838919 Title: Slow and lost keyboard and mouse events To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1838919/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs