Not able to upgrade from 14.04 to 14.10, stops with error message stating it could not calculate the upgrade ...

[Brandon West]

"Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

 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 using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal."

I do have one or two programs that are not from apt-get, but would be nice to know what software is causing the problem and what I should do to fix it.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.5
Uname: Linux 3.13.6-031306-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Fri Oct 24 11:02:24 2014
InstallationDate: Installed on 2013-09-24 (394 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-10-24 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update.manager.release.upgrades: 2014-04-23T22:41:16.573026

[Brandon West (zenithwest169)]

Solved the issue (states it very clearly in the VarLogDistupgradeMainlog.txt file):

2014-10-24 10:59:41,289 DEBUG blacklist expr '^postgresql-.*[0-9]\.[0-9].*' matches 'postgresql-plperl-9.3'
2014-10-24 10:59:41,289 DEBUG The package 'postgresql-plperl-9.3' is marked for removal but it's in the removal blacklist
2014-10-24 11:01:28,514 ERROR Dist-upgrade failed: 'The package 'postgresql-plperl-9.3' is marked for removal but it is in the removal blacklist.'
2014-10-24 11:01:28,515 DEBUG abort called
2014-10-24 11:01:28,541 DEBUG openCache()
2014-10-24 11:01:28,541 DEBUG failed to SystemUnLock() (E:Not locked)
2014-10-24 11:01:33,882 DEBUG /openCache(), new cache size 71258
2014-10-24 11:01:33,901 DEBUG enabling apt cron job

Uninstalling that program and clearing all the 'Other Software' options I added, fixed the issue.

[Launchpad Janitor (janitor)]

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

[Kevin Dalley (nereocystis)]

This problem sounds familiar. I believe that I had it on a previous upgrade.

[Kevin Dalley (nereocystis)]

My postgresql package is different: postgresql-9.3-postgis-2.1. Removing the package allowed my upgrade to continue.

2014-10-24 09:49:27,759 DEBUG plugins for condition 'utopicPostDistUpgradeCache' are '[]'
2014-10-24 09:49:27,759 DEBUG plugins for condition 'from_trustyPostDistUpgradeCache' are '[]'
2014-10-24 09:49:27,759 DEBUG Marking 'ubuntu-desktop' for upgrade
2014-10-24 09:49:28,016 DEBUG blacklist expr '^postgresql-.*[0-9]\.[0-9].*' matches 'postgresql-9.3-postgis-2.1'
2014-10-24 09:49:28,017 DEBUG The package 'postgresql-9.3-postgis-2.1' is marked for removal but it's in the removal blacklist