[Bug 1404476] [NEW] error during upgrade from 12.04 to 14.04

[Daniele]

Public bug reported:

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

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 i686
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: i386
Date: Sat Dec 20 12:35:30 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1419075196
 com.ubuntu.update-manager window-height 500
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04 "Precise" - Build i386 LIVE Binary 20130822-17:25
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-12-20 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 precise running-unity

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https://bugs.launchpad.net/bugs/1404476

Title:
  error during upgrade from 12.04 to 14.04

Status in update-manager package in Ubuntu:
  New

Bug description:
  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

  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 i686
  ApportVersion: 2.0.1-0ubuntu17.8
  Architecture: i386
  Date: Sat Dec 20 12:35:30 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1419075196
   com.ubuntu.update-manager window-height 500
   com.ubuntu.update-manager window-width 600
  InstallationMedia: Ubuntu 12.04 "Precise" - Build i386 LIVE Binary 20130822-17:25
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-12-20 (0 days ago)
  VarLogDistupgradeTermlog:

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