I haven't found any crash files in /var/crash on either system that I looked at in detail. It actually sort of acts like a normal 'install for a while, then reboot', it just comes back up in a half-installed state after that first reboot, which is why I think it crashed rather than normally rebooted. lastlog also shows a crash rather than a normal reboot, at least on my system.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789977 Title: Upgrade from 16.04 to 18.04 crashed, required dpkg --configure -a to recover (multiple machines) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1789977/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
