[Bug 876390] Re: failed to update from ubuntu 11.04 to 11.10

[mario frei]

** Attachment added: "apt.log"
   https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/876390/+attachment/2553504/+files/apt.log

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Title:
  failed to update from ubuntu 11.04 to 11.10

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

Bug description:
  when i try to update form 11.04 to 11.10 the following message
  appears:

  Es konnte nicht ermittelt werden, welche Systemaktualisierungen
  verfügbar sind

  An unresolvable problem occurred while calculating the upgrade:
  E:Fehler: Unterbrechungen durch pkgProblemResolver::Resolve hervorgerufen; dies könnte durch zurückgehaltene Pakete verursacht worden sein.

   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.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150.3
  ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Mon Oct 17 13:09:46 2011
  GConfNonDefault: /apps/update-manager/check_new_release_ignore=
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=de_CH:en
   PATH=(custom, no user)
   LANG=de_CH.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-10-17 (0 days ago)

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