[Bug 874231] Re: Update from 11.04 to 11.10 stops with an error message

[Alain]

I have now removed all unofficial software packages not provided by
Ubuntu that I know of and still got the same problem.

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https://bugs.launchpad.net/bugs/874231

Title:
  Update from 11.04 to 11.10 stops with an error message

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

Bug description:
  I get:
  Impossible d'évaluer la mise à niveau

  An unresolvable problem occurred while calculating the upgrade:
  E:Erreur, pkgProblemResolver::Resolve a généré des ruptures, ce qui a pu être causé par les paquets devant être gardés en l'état.

   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 update-manager' in a terminal.

  After I've seen that message I have updated all software on my machine
  and rebooted it.  I then repeated the ipdate from 11.04 to 11.10 and
  still get the same message.  What do I need to do now?

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150.4
  ProcVersionSignature: Ubuntu 2.6.38-12.51-generic 2.6.38.8
  Uname: Linux 2.6.38-12-generic x86_64
  NonfreeKernelModules: openafs nvidia
  Architecture: amd64
  Date: Fri Oct 14 09:42:26 2011
  GConfNonDefault:
   /apps/update-manager/check_new_release_ignore=
   /apps/update-manager/first_run=false
   /apps/update-manager/show_details=true
   /apps/update-manager/window_size=(600,1007)
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  PackageArchitecture: all
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, user)
   LANG=fr_CA.UTF-8
   LANGUAGE=fr_CA:en
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-10-14 (0 days ago)

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