I also hit this problem with do-release-upgrade from 14.04 lts to 16.04 lts. I have no extra or ppa repository.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1537199 Title: impossible to upgrade to 16.04 with sudo do-release-upgrade --devel- release To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1537199/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
