Brian, thanks for the responses. Please see my last action: root@ubuntu64:~# apt-get purge lldb
This allowed do-release-upgrade to finally proceed. gnome-shell and gnome-shell-common were wild gooses. The key ingredient seems to be this: root@ubuntu64:~# apt-get upgrade The following packages have been kept back: lldb Once I purged lldb, the release upgrade was clear to go. So, the hiccup seems to be held-back packages. I don't know enough about the inner workings of the upgrade process to understand how held-back packages figure into it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799319 Title: Upgrade to 18.10 fails: Please install all available updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1799319/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
