Thanks for your report. As you figured out it happened because mythbuntu is no longer supported [1] and it was the only desktop metapackage installed on your system.
I'm moving this bug to the mythbuntu project. [1] http://www.mythbuntu.org/home/news/mythbuntusolongandthanksforallthefish ** Summary changed: - release upgrade failing from zesty to artful + mythbuntu fails to upgrade from 16.04+ and should tell it is not supported anymore. ** Package changed: ubuntu-release-upgrader (Ubuntu) => mythbuntu-meta (Ubuntu) ** Changed in: mythbuntu-meta (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1739934 Title: mythbuntu fails to upgrade from 16.04+ and should tell it is not supported anymore. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mythbuntu-meta/+bug/1739934/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
