Cannot upgrade from 12.04 to 14.04

[Matt Geiman]

Trying to upgrade from 12.04 to 14.04, but it will not let me:

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.

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.

Restoring original system state

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

Saw an error regarding Cinnamon in the debug report so I removed it and the PPA associated with it, but I'm still having problems.

Description: Ubuntu 12.04.5 LTS
Release: 12.04

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.5.0-54.81~precise1-generic 3.5.7.33
Uname: Linux 3.5.0-54-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: amd64
Date: Wed Sep 3 08:30:59 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1389015387
 com.ubuntu.update-manager window-height 500
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-09-03 (0 days ago)

[Matt Geiman (geiman)]

This can be closed, the problem is fixed. After removing the ia32-libs package, the upgrade was able to continue. It just hit me that the ia32-libs metapackage is no longer available in 14.04, so it might have been causing issues.

First time bug reporting, looking now for how to close the bug (if I can).

[Launchpad Janitor (janitor)]

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