An unresolvable problem occurred while calculating the upgrade: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages

[Amir Moulavi]

Binary package hint: update-manager

Description: Ubuntu 10.04.1 LTS
Release: 10.04

I expected to be upgraded to maverick release but an error occured. Here is the stdout of the command I executed:

amir@amir-desktop:~$ sudo do-release-upgrade --mode=desktop
Checking for a new ubuntu release
Done Upgrade tool signature
Done Upgrade tool
Done downloading
extracting 'maverick.tar.gz'
authenticate 'maverick.tar.gz' against 'maverick.tar.gz.gpg'
tar: Removing leading `/' from member names

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done

Updating repository information
WARNING: Failed to read mirror file

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

98% [Working]
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done

Calculating the changes

Calculating the changes

Could not calculate 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

If none of this applies, then please report this bug against the
'update-manager' package and include the files in
/var/log/dist-upgrade/ in the bug report.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done

[Patrick Wenz (ppwstudi)]

Same problem here:

An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be
caused by held packages.

As in some similar posts requested "dpkg --get-selections | grep hold" does not return anything.

[Franx (frandalf-il-bianco)]

also for me:

An unresolvable problem occurred while calculating the upgrade:
E:Errore, pkgProblemResolver::Resolve ha generato delle interruzioni. Questo potrebbe essere causato da pacchetti bloccati.

 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

[Patrick Wenz (ppwstudi)]

Hi Franx, deactivating my nvidia driver in the third party driver gui worked for me and solved the problem. Prior to that i uninstalled the wine and xserver ppa stuff i added earlier with the ppa-purge dummy packages. Now everything is back to normal.

Regards, Patrick.

[crazy ivan (x-floc)]

Hi Franx, I had the same issues, deselected the driver from tried to REMOVE all the UNSUPPORTED PACKAGES. But in my case this was actually NOT NECESSARY.

After I removed EVERYTHING connected with 'nvidia' from synaptic (following http://<email address hidden>/msg2729329.html) the upgrade procedure yielded the additional line:

'Trying to install blacklisted version 'blcr-dkms_0.8.2-13'

That led me to remove the package connected with it (openmpi, cf. http://askubuntu.com/questions/5615/upgrade-fails-because-of-blcr-dkms). Now everything works..

But this is the first time I experience such a problem, and I wouldnt have been so eager to remove custom packages, if it were my main production system..

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.