Upgrade from 14.04 to 16.04 fails

[FalCT60]

Here are the results of the commands thereunder :

jean-luc@E-4300:~$ lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
jean-luc@E-4300:~$ apt-cache policy pkgname
N: Impossible de trouver le paquet pkgname
jean-luc@E-4300:~$

Contents of /var/log/dist-upgrade/ in attachment.

The error occurs during the repository configuration phase with the error box :
-------------------------------------------- Start ---------------------------------------------------
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.
--------------------------------------------- End ----------------------------------------------------

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-92.139-generic 3.13.11-ckt39
Uname: Linux 3.13.0-92-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
Date: Mon Aug 1 23:16:28 2016
InstallationDate: Installed on 2015-10-03 (303 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-08-01 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

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 package version numbers greater than the release to which you are upgrading. You can revert the PPA by installing the ppa-purge package from the official Ubuntu archive and then running 'sudo ppa-purge oibaf'. After that you try upgrading and again and if it still fails open a new bug report. Thanks and good luck!

[FalCT60 (jean-luc-ceccoli)]

Hello,

This didn't solve the problem, unfortunately. There must be other packages that prevent the upgrade, which I can't find due to my poor level knowledge.
I must have installed something once, but what ?
So, as this case is set as closed or so, I think the best I have to do is save my home and personnal data and start from a fresh install.
I've tried this once (with no real success), I intend to read the pages more carefully and give it another try.

Many thanks for your time, sorry you wasted it because of me.

Best regards,

J.-Luc

> Message du 14/09/16 22:31
> De : "Brian Murray"

> A : <email address hidden>
> Copie à :
> Objet : [Bug 1608697] Re: Upgrade from 14.04 to 16.04 fails
>
> *** 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 package version numbers greater than the release to which
> you are upgrading. You can revert the PPA by installing the ppa-purge
> package from the official Ubuntu archive and then running 'sudo ppa-
> purge oibaf'. After that you try upgrading and again and if it still
> fails open a new bug report. Thanks and good luck!
>
> ** Changed in: ubuntu-release-upgrader (Ubuntu)
> Status: New => Invalid
>
> ** Tags added: ppa xorg-oibaf-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
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1608697
>
> Title:
> Upgrade from 14.04 to 16.04 fails
>
> Status in ubuntu-release-upgrader package in Ubuntu:
> Invalid
>
> Bug description:
> Here are the results of the commands thereunder :
>
> jean-luc@E-4300:~$ lsb_release -rd
> Description: Ubuntu 14.04.4 LTS
> Release: 14.04
> jean-luc@E-4300:~$ apt-cache policy pkgname
> N: Impossible de trouver le paquet pkgname
> jean-luc@E-4300:~$
>
> Contents of /var/log/dist-upgrade/ in attachment.
>
> The error occurs during the repository configuration phase with the error box :
> -------------------------------------------- Start ---------------------------------------------------
> 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.
> --------------------------------------------- End ----------------------------------------------------
>
> ProblemType: Bug
> DistroRelease: Ubuntu 14.04
> Package: ubuntu-release-upgrader-core 1:0.220.8
> ProcVersionSignature: Ubuntu 3.13.0-92.139-generic 3.13.11-ckt39
> Uname: Linux 3.13.0-92-generic x86_64
> ApportVersion: 2.14.1-0ubuntu3.21
>...