[Bug 843705] Re: upgrade from 11.04 to 11.10 says it has unresolvable problem

[smitpatel24]

/var/log/dist-upgrade/apt.log

** Attachment added: "/var/log/dist-upgrade/apt.log"
   https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/843705/+attachment/2366950/+files/apt.log

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Title:
  upgrade from 11.04  to 11.10 says it has unresolvable problem

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

Bug description:
  output of sudo do-release-upgrade -d

  
  Could not calculate the upgrade 

  An unresolvable problem occurred while calculating the upgrade: 
  The package 'ubuntu-desktop' is marked for removal but it is in the 
  removal blacklist. 

  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 2.6.38-11.49-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Wed Sep  7 14:31:08 2011
  GConfNonDefault: /apps/update-manager/check_new_release_ignore=
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-09-07 (0 days ago)

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