[Bug 1810450] Re: LTS dist upgrade failure from 16.04 to 18.04

[Thibaut]

Figured out that I just had to install some packages (libgfortran4 and
cpp-7 for my case) required by the hold back packages (listed in Apt
log)..

.. and finally the Bionic Beaver could be brought back to life.

I also did this before because I ran through the same error:
https://askubuntu.com/questions/943463/e-problem-executing-scripts-apt-
updatepost-invoke-success-error-during-apt-ge

.. but not sure if it is related.

** Summary changed:

- LTS dist upgrade failure from 16.04 to 18.04
+ [SOLVED] LTS dist upgrade failure from 16.04 to 18.04

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1810450

Title:
  [SOLVED] LTS dist upgrade failure from 16.04 to 18.04

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

Bug description:
  I just upgrade from 14.04 to 16.04 before. I had some broken packages
  that I corrected.

  Then:
  sudo apt-get update
  sudo apt-get upgrade
  sudo do-release-upgrade

  leads me to:
  -> Un problème insoluble est survenu lors de la préparation de la mise à 
  niveau. 
  -> ENGLISH: An unresolvable problem occurred while calculating the upgrade

  In /var/log/dist-upgrade/XXX/main.log :

  -> ERROR Dist-upgrade failed: 'E:Erreur, pkgProblem::Resolve a généré des ruptures
  -> ENGLISH: pkgProblemResolver::Resolve generated breaks, this may be caused by held packages

  Thanks for any help

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.26
  ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162
  Uname: Linux 4.4.0-141-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Jan  4 00:01:45 2019
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-01-03 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2019-01-02T16:24:36.364160

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1810450/+subscriptions