One problem is that the 3.20.5-0ubuntu0.16.04.6 update got stuck in phased-updates. Also, the similar bug for Ubuntu 17.04 has *never* been fixed for all users because of phased-updates.
https://people.canonical.com/~ubuntu-archive/phased-updates.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1672424 Title: Cannot install Debian files outside of the repositories To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1672424/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
