[Bug 990073] [NEW] Upgrade to 12.04 fails with "Could not calculate the upgrade" error

[mrnedburns]

Public bug reported:

I've never seen this before on previous upgrades.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: update-manager (not installed)
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Fri Apr 27 16:00:40 2012
InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to oneiric on 2012-04-27 (0 days ago)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric

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https://bugs.launchpad.net/bugs/990073

Title:
  Upgrade to 12.04 fails with "Could not calculate the upgrade" error

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

Bug description:
  I've never seen this before on previous upgrades.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: update-manager (not installed)
  ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
  Uname: Linux 3.0.0-16-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Fri Apr 27 16:00:40 2012
  InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
  ProcEnviron:
   LANGUAGE=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to oneiric on 2012-04-27 (0 days ago)

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