Ok, the upgrade does appear to get off the ground (it's still running as I write this) if I create a /etc/update-manager/release- upgrades.d/DistUpgrade.cfg containing the following 2 lines:
[Sources] AllowThirdParty = true -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/289952 Title: update-manager rewrites sources.list to only use official mirrors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/289952/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
