You must not only remove the PPA entries but also remove the software installed from these PPAs or revert to versions from the official Ubuntu repositories. That's why Brian recommended to use ppa-purge instead of just removing them with the Software Properties tool.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788906 Title: Trying to upgrade Ubuntu to latest version To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1788906/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
