[Bug 1605445] Re: can't upgrade system due to some bug

[Launchpad Bug Tracker]

[Expired for update-manager (Ubuntu) because there has been no activity
for 60 days.]

** Changed in: update-manager (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1605445

Title:
  can't upgrade system due to some bug

Status in update-manager package in Ubuntu:
  Expired

Bug description:
  I'm trying to upgrade my 12.04 LTS to 14.04LTS and everything went
  fine till this part... I actually don't know if it's the update
  manager, but it says all this towards the end:

  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

  -------

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.19
  Uname: Linux 3.3.8-24-generic i686
  ApportVersion: 2.0.1-0ubuntu17.13
  Architecture: i386
  Date: Thu Jul 21 21:49:25 2016
  GsettingsChanges:

  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   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 2016-07-22 (0 days ago)

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