[Bug 1584574] Re: upgrade to xenial from trusty does not work

[Brian Murray]

*** This bug is a duplicate of bug 1069133 ***
    https://bugs.launchpad.net/bugs/1069133

Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides Xorg packages. This will prevent the upgrade as that
PPA contains different versions of packages essential to Ubuntu.  The
page, https://launchpad.net/~xorg-edgers/+archive/ppa, contains details
on to how to revert to the official Xorg packages for the xorg-edgers
PPA.  Instructions for reverting to official Xorg packages should be
similar for the PPA that you have enabled.

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

** Tags added: ppa xorg-edgers-ppa

** This bug has been marked a duplicate of bug 1069133
   Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

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https://bugs.launchpad.net/bugs/1584574

Title:
  upgrade to xenial from trusty does not work

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

Bug description:
  sudo apt-get install update-manager-core
  sudo do-release-upgrade -d

  failed to caclulate changes

  running trusty

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  Uname: Linux 3.14.0-031400-generic i686
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Sun May 22 22:59:30 2016
  InstallationDate: Installed on 2011-09-07 (1719 days ago)
  InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-05-23 (0 days ago)

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