Happens to me as well, though from main.log the problem seems to be with nvidia-glx (after which I get the error message):
2008-04-25 19:01:10,065 DEBUG Marking 'ubuntu-desktop' for upgrade 2008-04-25 19:01:10,457 DEBUG The package 'nvidia-glx' is marked for removal but it's in the removal blacklist 2008-04-25 19:01:28,846 ERROR Dist-upgrade failed: 'A essential package would have to be removed' ** Attachment added: "main.log" http://launchpadlibrarian.net/13913499/main.log -- Update manager fails [gutsy->hardy]- an unresolvable problem occurred while calculating the upgrade https://bugs.launchpad.net/bugs/215554 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs