There are more than three bug reports and a number of questions with respect to an attempt to upgrade from 10.04 to 10.10 failing with the error message
"Could not determine the upgrade An unresolvable problem occurred while calculating the upgrade: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu" (e.g. bug 663158, bug 658458 and bug 658581) Most of the persons had xserver-xorg-video-nouveau installed, and after removal of that package the upgrade went ok. If you have that package installed, you might try to remove the xserver-xorg-video-nouveau package and try the upgrade again. If that does not help please attach the contents of the /var/log/dist- upgrade/ folder, they should give more details of what went wrong. ** Changed in: update-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/712512 Title: E:Error,pkgProblemResolver::Resolve generated breaks,this may be caused by held packages. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs