# Ubuntu – Upgrade Ubuntu 10.04 to Ubuntu 10.10

I'm new to these forums so I'll be quick.

When I try to upgrade to Ubuntu 10.10 from 10.04 I get this error, I have tried upgrading from Terminal and Update Manager as well.

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
If none of this applies, then please report this bug against the
'update-manager' package and include the files in
Restoring original system state
Thanks
Aborting

• Uninstall xserver-xorg-video-all (and xserver-xorg-video-nouveau).
• Install xserver-xorg-video-all (and xserver-xorg-video-nouveau).