[Bug 1313815] Re: upgrading from 12.04 LTS -> 14.04 LTS Could not calculate the upgrade (maybe weird graphics stuff going on)

[Brian Murray]

This is because of the ubuntu-x-swat PPA you have enabled.  Look for the
tool ppa-purge to deactivate the PPA and revert to the official package
versions in Ubuntu 12.04, then the upgrade should proceed.

** Changed in: update-manager (Ubuntu)
       Status: New => Incomplete

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Title:
  upgrading from 12.04 LTS -> 14.04 LTS Could not calculate the upgrade
  (maybe weird graphics stuff going on)

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

Bug description:
  "Could not calculate the upgrade" error when attempting to update to
  14.04 LTS using the Update Manager.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.13
  ProcVersionSignature: Ubuntu 3.5.0-48.72~precise1-generic 3.5.7.31
  Uname: Linux 3.5.0-48-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Mon Apr 28 09:25:32 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1398353766
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 617
   com.ubuntu.update-manager window-width 600
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-04-28 (0 days ago)
  VarLogDistupgradeTermlog:

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