[Bug 1572262] Re: Trusty to Xenial upgrade fails - Could not calculate the upgrade

Wed Apr 20 07:23:38 UTC 2016

*** This bug is a duplicate of bug 1571677 ***
    https://bugs.launchpad.net/bugs/1571677

** This bug is no longer a duplicate of bug 1561420
   Upgrade from Trusty to Xenial failed (Ubuntu Studio)
** This bug has been marked a duplicate of bug 1571677
   upgrading caused a broken apt cache due to *-lts-vivid packages conflicting with current X packages

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https://bugs.launchpad.net/bugs/1572262

Title:
  Trusty to Xenial upgrade fails - Could not calculate the upgrade

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

Bug description:
  Testing an upgrade from Trusty to Xenial fails with a "Could not
  calculate the upgrade" error.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 4.2.0-35.40~14.04.1-lowlatency 4.2.8-ckt5
  Uname: Linux 4.2.0-35-lowlatency x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  CurrentDmesg.txt:
   [   40.472292] init: plymouth-upstart-bridge main process ended, respawning
   [   40.684498] init: plymouth-upstart-bridge main process (1202) terminated with status 1
   [   40.684588] init: plymouth-upstart-bridge main process ended, respawning
   [   42.206548] init: plymouth-stop pre-start process (1274) terminated with status 1
  Date: Tue Apr 19 20:09:08 2016
  InstallationDate: Installed on 2016-02-17 (61 days ago)
  InstallationMedia: Ubuntu-Studio 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160216)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-04-19 (0 days ago)
  VarLogDistupgradeTermlog:

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