[Bug 1769863] Re: Upgrade failed

[Brian Murray]

I would take a more measured / cautious approach than the one dino99
recommends. Looking at your Aptlog.txt file it seems that the PPA
providing the following package is most likely causing the issue.

  Installing libssl1.1 as Dépend of libsasl2-modules
    MarkInstall libssl1.1:i386 < none -> 1.1.0g-2ubuntu4 @un uN Ib > FU=0
     Removing: libssl1.1
      MarkDelete libssl1.1:amd64 < 1.1.0h-2+ubuntu17.10.1+deb.sury.org+2 @ii mK Ib > FU=0
  MarkInstall nmap:amd64 < 7.60-1ubuntu1 -> 7.60-1ubuntu5 @ii umU Ib > FU=0
  Installing libssl1.1 as Dépend of nmap
      MarkKeep libssl1.1:amd64 < 1.1.0h-2+ubuntu17.10.1+deb.sury.org+2 @ii mR > FU=0

I believe that package comes from the, ondrej-ubuntu-php-artful, PPA -
so use 'ppa-purge' with that PPA first and then try the upgrade again.
Thanks!

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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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