After much testing, I ended up uninstalling all the "foreign" packages in /var/log/dist-upgrade/main.log and the update is in progress now. I'd say it was cinnamon what was preventing the upgrade.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1510016 Title: Cannot upgrade to Ubuntu 15.10 (Could not calculate the upgrade) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1510016/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
