This might be a duplicate of bug #721306 If the package xserver-xorg-video-nouveau is installed, in several cases the 10.04 to 10.10 upgrade fails 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" Several persons have reported that after removal of that package the upgrade was successful. Try this workaround: Open a terminal and enter the command: sudo apt-get remove xserver-xorg-video-nouveau (which most probably will also remove xserver-xorg-video-all) and then try the upgrade again. ++++++++++++++++++ If xserver-xorg-video-nouveau blocks the upgrade from 10.04 to 10.10, it might as well block the LTS upgrade 10.04 to 12.04 with the consequence, that not (two years later) there might be a higher number of such bug reports again! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1023732 Title: Ubuntu upgrade from 10.04 to 10.10 fail To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1023732/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs