[Bug 1909864] Re: Impossible de mettre à jour de 18.04 à 21.04

[Brian Murray]

*** This bug is a duplicate of bug 1899000 ***
    https://bugs.launchpad.net/bugs/1899000

Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides sane 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 ppa:sane-project/sane-git' or 'sudo ppa-purge ppa:sane-project
/sane-release' .  After that you can try upgrading 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 sane-ppa

** This bug has been marked a duplicate of bug 1899000
   Upgrade 18.04 --> 20.04 fails if using a PPA providing sane packages

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https://bugs.launchpad.net/bugs/1909864

Title:
  Impossible de mettre à jour de 18.04 à 21.04

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

Bug description:
  Bonjour,
  Bien que j'ai supprimer tous les ppa aures que celui de Cannonical, la mise à jour échoue.
  J'ai lancé lka commande :
  ubuntu-bug ubuntu-release-upgrader-core
  Elle a déclenché une erreur :
  jean-jacques at lacrampe-NUC:~$ ubuntu-bug ubuntu-release-upgrader-core
  comm: /var/log/dmesg: Aucun fichier ou dossier de ce type
  jean-jacques at lacrampe-NUC:~$ [24059:24059:0102/170758.977831:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.
  [24026:24045:0102/170806.354818:ERROR:connection_factory_impl.cc(420)] Failed to connect to MCS endpoint with error -21
  Merci d'avance pour votre aide
  Jean-Jacques Lacrampe

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.41
  ProcVersionSignature: Ubuntu 4.15.0-128.131-generic 4.15.18
  Uname: Linux 4.15.0-128-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jan  2 17:07:16 2021
  InstallationDate: Installed on 2018-05-04 (974 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  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 bionic on 2021-01-02 (0 days ago)

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