[Bug 1424126] Re: An unresolvable problem occurred while calculating the upgrade

[federico virello]

Someone suggest this: "apt-get remove libkrb5-3" I'm going to try.

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Title:
  An unresolvable problem occurred while calculating the upgrade

Status in update-manager package in Ubuntu:
  New

Bug description:
  I tried to make the upgrade from Ubuntu 12.04 LTS to 14.04.2 LTS and during the calculation appeared the following error:
  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.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.18
  ProcVersionSignature: Ubuntu 3.2.0-77.112-generic-pae 3.2.66
  Uname: Linux 3.2.0-77-generic-pae i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.8
  Architecture: i386
  Date: Sat Feb 21 05:58:29 2015
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1424494406
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 709
   com.ubuntu.update-manager window-width 600
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2015-02-21 (0 days ago)
  VarLogDistupgradeTermlog:

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