[Bug 1172924] Re: Can't upgrade from ubuntu from 12.04 to 12.10

[Brian Murray]

The third point, "unofficial packages not provided by Ubuntu", applies
to you as you have multiple PPAs enabled.  Some of these have caused an
unresolvable situation due to the packages relationship to each other
and their dependencies.

** Changed in: update-manager (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1172924

Title:
  Can't upgrade from ubuntu from 12.04 to 12.10

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

Bug description:
  When upgrading from 12.04 to 12.10, the process crashes in step 3( Getting the new packages) and pops up the following message:
  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade:
  E:Unable to correct problems, you have held broken packages.

   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 1:0.156.14.11
  ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
  Uname: Linux 3.5.0-18-generic i686
  ApportVersion: 2.0.1-0ubuntu17.2
  Architecture: i386
  Date: Thu Apr 25 23:43:51 2013
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1366925741
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 1000
   com.ubuntu.update-manager window-width 1280
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  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 2013-04-25 (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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