I removed the ubuntu-desktop metapackage, as suggested in bug report 1888275. That allowed the do-release-upgrade scripting to proceed. Thanks for pointing out the other report, and apologies for the duplication.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875107 Title: unable to upgrade with lubuntu-desktop and ubuntu-desktop installed due to xscreensaver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1875107/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
