[Bug 1384237] Re: Unable to upgrade from 12.04 to 14.04 (server)

[Freeben666]

After investigating a little bit more, it appears it is caused by the
inability of the upgrade script to upgrade PostgreSQL

>From main.log :
2014-10-22 14:40:05,871 DEBUG blacklist expr '^postgresql-.*[0-9]\.[0-9].*' matches 'postgresql-9.1-pgmemcache'
2014-10-22 14:40:05,871 DEBUG The package 'postgresql-9.1-pgmemcache' is marked for removal but it's in the removal blacklist
2014-10-22 14:40:05,885 ERROR Dist-upgrade failed: 'Le paquet « postgresql-9.1-pgmemcache » est marqué pour suppression mais il est dans la liste noire des suppressions.'

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https://bugs.launchpad.net/bugs/1384237

Title:
  Unable to upgrade from 12.04 to 14.04 (server)

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  Here is the end of the output from the "do-release-upgrade" command :

  Calcul des modifications en cours

  Impossible d'évaluer la mise à niveau

  An unresolvable problem occurred while calculating the upgrade.

  This can be caused by:
  * Upgrading to a pre-release version of Ubuntu
  * Running the current pre-release version of Ubuntu
  * Unofficial software packages not provided by Ubuntu

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager (not installed)
  ProcVersionSignature: Ubuntu 3.2.0-69.103-generic 3.2.62
  Uname: Linux 3.2.0-69-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  Date: Wed Oct 22 14:40:37 2014
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-10-22 (0 days ago)

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