Upgrade to 10.10 refused

Asked by Sten Andersson on 2011-02-12

I use Ubuntu 10.04 LTS - Lucid Lynx - released april 2010 supported until april 2013.

When trying to upgrade to 10.10 according to information in the update manager the upgrade starts but after a few steps it is interrupted. A number of alternate reasons are proposed, i.e. upgrading to a pre-release.

Is there any known problems i shuld know about or shall I reconfigure some way?

Rather new to Ubuntu, middle-skilled user, "expert" during the DOS-years.

Best regards
Sten Andersson

Question information

English Edit question
Ubuntu update-manager Edit question
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Solved by:
Manfred Hampl
Last query:
Last reply:


gksudo gedit /etc/update-manager/release-upgrades


Save the new file, then run:

sudo apt-get install update-manager-core; sudo do-release-upgrade

Should be fine and upgrade to Maverick just dandy

Best Manfred Hampl (m-hampl) said : #2

This can be a duplicate of bug 614993 (and dozens of 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 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

and try the upgrade again.

If this does not help please provide an description of the actions that you have executed and the exact messages you see on screen.

Many thnks, I have now upgraded to 10.10