[Bug 1674242] [NEW] After reinstalling from a CD of U 14.04.2, I try now to upgrade to 16.04

[d52fr]

Public bug reported:

After the poor result of the update of Linux Kernel 4.4.0.67 (?) on U 16.04, yesterday, I was forced to reinstall without Internet. After reinstalling from a CD of U 14.04.2,  I try now to upgrade to 16.04.
>From "Mises à jour" (updates), I choose "Mise à niveau" (upgrade) that started normally until the message below was displayed :

"Impossible d'évaluer la mise à niveau

Un problème insoluble est survenu lors de la préparation de la mise à
niveau.

 Ceci peut-être dû à :
 * la mise à niveau vers une version de développement d'Ubuntu ;
 * la version de développement d'Ubuntu est actuellement utilisée ;
 * des paquets logiciels non officiels, non fournis par Ubuntu.

Si rien de tout cela ne s'applique, veuillez signaler ce bogue en
utilisant la commande « ubuntu-bug ubuntu-release-upgrader-core » dans
un terminal."

If I am now on this page, it is only due to this message !
Regards

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 4.4.0-67.88~14.04.1-generic 4.4.49
Uname: Linux 4.4.0-67-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon Mar 20 08:13:04 2017
InstallationDate: Installed on 2017-03-19 (0 days ago)
InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2017-03-20 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty

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https://bugs.launchpad.net/bugs/1674242

Title:
  After reinstalling from a CD of U 14.04.2,  I try now to upgrade to
  16.04

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

Bug description:
  After the poor result of the update of Linux Kernel 4.4.0.67 (?) on U 16.04, yesterday, I was forced to reinstall without Internet. After reinstalling from a CD of U 14.04.2,  I try now to upgrade to 16.04.
  From "Mises à jour" (updates), I choose "Mise à niveau" (upgrade) that started normally until the message below was displayed :

  "Impossible d'évaluer la mise à niveau

  Un problème insoluble est survenu lors de la préparation de la mise à
  niveau.

   Ceci peut-être dû à :
   * la mise à niveau vers une version de développement d'Ubuntu ;
   * la version de développement d'Ubuntu est actuellement utilisée ;
   * des paquets logiciels non officiels, non fournis par Ubuntu.

  Si rien de tout cela ne s'applique, veuillez signaler ce bogue en
  utilisant la commande « ubuntu-bug ubuntu-release-upgrader-core » dans
  un terminal."

  If I am now on this page, it is only due to this message !
  Regards

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 4.4.0-67.88~14.04.1-generic 4.4.49
  Uname: Linux 4.4.0-67-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon Mar 20 08:13:04 2017
  InstallationDate: Installed on 2017-03-19 (0 days ago)
  InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2017-03-20 (0 days ago)
  VarLogDistupgradeTermlog:

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