[Bug 1769863] Re: Upgrade failed

[dino99]

You have plenty of broken packages:
https://launchpadlibrarian.net/369266812/VarLogDistupgradeAptlog.txt

Use 'ppa-purge' to downgrade to genuine version for each ppa. Deactivate others ppas (skype ...).
Then clean the system via 'gtkorphan' & 'bleachbit' (as root, carefully select options), and reboot.

Try again the upgrade, the dist-upgrade script should be happier.

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

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https://bugs.launchpad.net/bugs/1769863

Title:
  Upgrade failed

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

Bug description:
  I'm trying to upgrade from 17.10 to 18.04 using update-manager.
  The following message is shown:
  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.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: ubuntu-release-upgrader-core 1:17.10.11
  ProcVersionSignature: Ubuntu 4.13.0-39.44-generic 4.13.16
  Uname: Linux 4.13.0-39-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Tue May  8 12:36:43 2018
  InstallationDate: Installed on 2015-02-08 (1184 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to artful on 2018-05-08 (0 days ago)
  VarLogDistupgradeTermlog:

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