[Bug 1408327] Re: "Could not calculate the upgrade" during "do-release-upgrade -d"

[Brian Murray]

Its probably because you had multiple desktop meta packages installed,
ubuntu-desktop and ubuntu-gnome-desktop, which the upgrader does not
handle well.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1408327

Title:
  "Could not calculate the upgrade" during "do-release-upgrade  -d"

Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid

Bug description:
  Hi,

  I'm trying to upgrade from 14.04.1 LTS to 14.10 and I'm getting this
  error message:

  -----
  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  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. 
  -----

  As there are no further messages, I am unsure what I can do next.  I
  presume  there is something special about my installation that differs
  from everyone else?

  Thank you!

  Ray

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.6 [origin: unknown]
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Jan  7 22:47:55 2015
  InstallationDate: Installed on 2012-10-27 (801 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-01-07 (0 days ago)

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