[Bug 1492266] Re: upgrade from 14.04.2 to 14.10 hangs on calculating upgrades

[Gavin]

I tried it again a few days later with no change and it worked fine.
Thanks for looking at it!

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https://bugs.launchpad.net/bugs/1492266

Title:
  upgrade from 14.04.2 to 14.10 hangs on calculating upgrades

Status in ubuntu-release-upgrader package in Ubuntu:
  Incomplete

Bug description:
  Upgrading 14.04.2 to 14.10 hangs on "Calculating Upgrades".  I have ran the following commands numerous times and in numerous orders:
  sudo apt-get autoremove
  sudo apt-get dist-update
  sudo apt-get update
  sudo apt-get upgrade

  I have even deleted the "apt.log" file in /var/log/dist-upgrade/apt.log after finding that in a forum.
  Running grep ERROR /var/log/dist-upgrade/main.log returns:
  ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'

  Package manager says all packages are up to date.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.7
  ProcVersionSignature: Ubuntu 3.16.0-48.64~14.04.1-generic 3.16.7-ckt15
  Uname: Linux 3.16.0-48-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Sep  4 09:17:38 2015
  InstallationDate: Installed on 2015-08-03 (32 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-09-04 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2015-09-04T08:48:13.809945

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