I think I am having this bug too (running "ubuntu-bug ubuntu-release- upgrader-core" brought me to this page). I was trying to upgrade from 14.04 to 16.04. /var/log/dist-upgrade/apt.log says "ERROR Dist-upgrade failed: 'The package 'ubuntu-desktop' is marked for removal but it is in the removal blacklist.'". It doesn't explain what a "removal blacklist" is.
The file /var/log/dist-upgrade/main.log says "DEBUG MetaPkgs: kubuntu- desktop ubuntu-desktop", which based on a comment above should mean I have two metapackages installed. I believe I run Kubuntu, and I certainly use KDE. Does this mean it's safe to remove the package ubuntu-desktop? Sorry to seem clueless! /var/log/dist-upgrade/apt.log lists both ubuntu-desktop:amd64 and kubuntu-desktop:amd64 as Broken, whatever that means. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1510841 Title: "Could not calculate the upgrade" due to multiple metapackages being installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1510841/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs