Missing repositories are not the problem, they are just ignored. The problem is that modules required by update-manager are missing in python3:
for example: This works: $ python2 -c "import vte" but this doesn't $ python3 -c "import vte" Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: No module named vte -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009226 Title: Precise to Quantal: update-manager UI crashes: can't load DistUpgradeViewGtk (No module named vte) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1009226/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs