This can be a duplicate of bug 721306 and bug 658458 (and a dozen
similar ones)
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
*** This bug is a duplicate of bug 721306 ***
https://bugs.launchpad.net/bugs/721306
** This bug has been marked a duplicate of bug 721306
[MASTER] Can't upgrade from 10.04LTS to 10.10 - E:Error,
pkgProblemResolver::Resolve generated breaks - xorg-xserver-video-nouveau
* You can
