[Bug 1274672] Re: Fresh install of 12.04.3 fails to upgrade to 14.04

[Steve Magoun]

@Jean-Baptiste: the logs are already attached, and I've just attached
apt-clone_system_state.tar.gz Apport is supposed to upload that file
automatically, but it doesn't due to a permissions error (bug 1274704)

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https://bugs.launchpad.net/bugs/1274672

Title:
  Fresh install of 12.04.3 fails to upgrade to 14.04

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  A fresh install of 12.04.3 fails to upgrade to 14.04.

  To reproduce:
  1) Install 12.04.3 (I am using the amd64 version in a virtualbox VM)
  2) Install all available software updates
  3) Run update-manager -d to force the upgrade to the development release of Ubuntu

  Expected results:
  The upgrade runs and completes

  Actual results:
  update-manager reports "Could not calculate the upgrade. An unresolvable probolem occured while calculating the uprade". There are no details in the error dialog about what went wrong.

  From /var/log/dist-upgrade/main.log it looks like a packaging problem
  results in unity being selected for removal, which is not valid
  because unity is in the blacklist of packages that should not be
  removed on upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.11
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
  Uname: Linux 3.8.0-29-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Thu Jan 30 14:36:41 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1391108049
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  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 2014-01-30 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz: Error: [Errno 13] Permission denied: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
  VarLogDistupgradeTermlog:

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