[Bug 1702338] Re: Can't upgrade from Xubuntu 14.04 to 16.04 - "No se ha podido calcular la actualización"

[Brian Murray]

*** This bug is a duplicate of bug 1069133 ***
    https://bugs.launchpad.net/bugs/1069133

Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides Xorg packages. This will prevent the upgrade as that
PPA contains different versions of packages essential to Ubuntu.  The
page, https://launchpad.net/~xorg-edgers/+archive/ppa, contains details
on to how to revert to the official Xorg packages for the xorg-edgers
PPA.  Instructions for reverting to official Xorg packages should be
similar for the PPA that you have enabled.

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

** Tags added: ppa xorg-edgers-ppa

** This bug has been marked a duplicate of bug 1069133
   Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

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https://bugs.launchpad.net/bugs/1702338

Title:
  Can't upgrade from Xubuntu 14.04 to 16.04 - "No se ha podido calcular
  la actualización"

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

Bug description:
  Comprobando el gestor de paquetes
  Leyendo lista de paquetes... Finalizado       
  Creando árbol de dependencias                  
  Leyendo la información de estado... Finalizado
  Generando estructuras de datos... Finalizado  

  Calculando los cambios

  Calculando los cambios

  No se ha podido calcular la actualización

  Ha ocurrido un problema mientras se calculaba la actualización.

  Eso se ha podido causar por: 
  * Actualizar a una versión de Ubuntu aún no publicada 
  * Estar ejecutando la versión actual, aún no publicada, de Ubuntu 
  * Paquetes no oficiales de software no proporcionados por Ubuntu 

  Si nada de esto aplica, informe de este error usando la orden 
  «ubuntu-bug ubuntu-release-upgrader-core» en una terminal. 

  
  Restaurando el estado original del sistema

  Cancelando
  Leyendo lista de paquetes... Finalizado       
  Creando árbol de dependencias                  
  Leyendo la información de estado... Finalizado
  Generando estructuras de datos... Finalizado

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22
  Uname: Linux 3.13.0-61-generic i686
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.24
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Tue Jul  4 18:37:31 2017
  InstallationDate: Installed on 2013-04-01 (1554 days ago)
  InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2017-07-04 (0 days ago)
  VarLogDistupgradeTermlog:

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