It was a problem in my local ubuntu mirrored repository. I have enabled the official repositories, and the upgrade went well.
** Changed in: update-manager (Ubuntu) Status: Incomplete => Invalid -- can't install ubuntu-desktop https://bugs.launchpad.net/bugs/258825 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