[Bug 1573252] [NEW] upgrade to 16.04 could not calculate the upgrade error

[Francesco Paul]

Public bug reported:

When upgrading from 15.10 to 16.04 went ok until we got the could not
calculate the upgrade error message.

I read if there are unofficial software packages it could be the
problem. How would I know what packages are unofficial and how exactly
would I remove them?

Long time Ubuntu user over 7 years if that helps.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic i686
ApportVersion: 2.19.1-0ubuntu5
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Apr 21 17:02:46 2016
InstallationDate: Installed on 2016-02-25 (55 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-04-21 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 third-party-packages wily

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https://bugs.launchpad.net/bugs/1573252

Title:
  upgrade to 16.04 could not calculate the upgrade error

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

Bug description:
  When upgrading from 15.10 to 16.04 went ok until we got the could not
  calculate the upgrade error message.

  I read if there are unofficial software packages it could be the
  problem. How would I know what packages are unofficial and how exactly
  would I remove them?

  Long time Ubuntu user over 7 years if that helps.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.4
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-generic i686
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Apr 21 17:02:46 2016
  InstallationDate: Installed on 2016-02-25 (55 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to wily on 2016-04-21 (0 days ago)
  VarLogDistupgradeTermlog:

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