pedro@pedro-VirtualBox:~$ sudo apt-get update && sudo do-release-upgrade -d
[sudo] password for pedro:
Ign http://archive.ubuntu.com trusty InRelease
Ign http://archive.canonical.com trusty InRelease
Des:1 http://archive.ubuntu.com trusty-security InRelease [65,9 kB]
Obj http://archive.canonical.com trusty Release.gpg
Obj http://archive.canonical.com trusty Release
Obj http://archive.canonical.com trusty/partner amd64 Packages
Obj http://archive.canonical.com trusty/partner i386 Packages
Obj http://archive.ubuntu.com trusty Release.gpg
Obj http://archive.canonical.com trusty/partner Translation-en
Des:2 http://archive.ubuntu.com trusty-security/main Sources [120 kB]
Des:3 http://archive.ubuntu.com trusty-security/restricted Sources [4.064 B]
Des:4 http://archive.ubuntu.com trusty-security/multiverse Sources [3.201 B]
Des:5 http://archive.ubuntu.com trusty-security/main amd64 Packages [541 kB]
Des:6 http://archive.ubuntu.com trusty-security/restricted amd64 Packages [13,0 kB]
Des:7 http://archive.ubuntu.com trusty-security/multiverse amd64 Packages [5.198 B]
Des:8 http://archive.ubuntu.com trusty-security/main i386 Packages [501 kB]
Des:9 http://archive.ubuntu.com trusty-security/restricted i386 Packages [12,7 kB]
Des:10 http://archive.ubuntu.com trusty-security/multiverse i386 Packages [5.348 B]
Obj http://archive.ubuntu.com trusty-security/main Translation-en
Obj http://archive.ubuntu.com trusty-security/multiverse Translation-en
Obj http://archive.ubuntu.com trusty-security/restricted Translation-en
Obj http://archive.ubuntu.com trusty Release
Obj http://archive.ubuntu.com trusty/main Sources
Obj http://archive.ubuntu.com trusty/restricted Sources
Obj http://archive.ubuntu.com trusty/multiverse Sources
Obj http://archive.ubuntu.com trusty/main amd64 Packages
Obj http://archive.ubuntu.com trusty/restricted amd64 Packages
Obj http://archive.ubuntu.com trusty/multiverse amd64 Packages
Obj http://archive.ubuntu.com trusty/main i386 Packages
Obj http://archive.ubuntu.com trusty/restricted i386 Packages
Obj http://archive.ubuntu.com trusty/multiverse i386 Packages
Obj http://archive.ubuntu.com trusty/main Translation-es
Obj http://archive.ubuntu.com trusty/main Translation-en
Obj http://archive.ubuntu.com trusty/multiverse Translation-es
Obj http://archive.ubuntu.com trusty/multiverse Translation-en
Obj http://archive.ubuntu.com trusty/restricted Translation-es
Obj http://archive.ubuntu.com trusty/restricted Translation-en
Ign http://archive.ubuntu.com trusty/main Translation-es_CL
Ign http://archive.ubuntu.com trusty/multiverse Translation-es_CL
Ign http://archive.ubuntu.com trusty/restricted Translation-es_CL
Descargados 1.271 kB en 21seg. (59,3 kB/s)
Leyendo lista de paquetes... Hecho
Comprobar si hay una nueva versión de Ubuntu
Obtener:1 Firma de la herramienta de actualización [198 B]
Obtener:2 Herramienta de actualización [1.262 kB]
Obtenidos 1.262 kB en 6seg. (117 kB/s)
autenticar «xenial.tar.gz» contra «xenial.tar.gz.gpg»
extrayendo «xenial.tar.gz»
Leyendo la caché
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
Ignorado http://archive.ubuntu.com trusty InRelease
Ignorado http://archive.canonical.com trusty InRelease
Conexión http://archive.ubuntu.com trusty-security InRelease
Conexión http://archive.ubuntu.com trusty Release.gpg
Conexión http://archive.ubuntu.com trusty-security/main Sources
Conexión http://archive.ubuntu.com trusty-security/restricted Sources
Conexión http://archive.ubuntu.com trusty-security/multiverse Sources
Conexión http://archive.ubuntu.com trusty-security/main amd64 Packages
Conexión http://archive.ubuntu.com trusty-security/restricted amd64 Packages
Conexión http://archive.ubuntu.com trusty-security/multiverse amd64 Packages
Conexión http://archive.ubuntu.com trusty-security/main i386 Packages
Conexión http://archive.canonical.com trusty Release.gpg
Conexión http://archive.ubuntu.com trusty-security/restricted i386 Packages
Conexión http://archive.ubuntu.com trusty-security/multiverse i386 Packages
Conexión http://archive.ubuntu.com trusty-security/main Translation-en
Conexión http://archive.ubuntu.com trusty-security/multiverse Translation-en
Conexión http://archive.ubuntu.com trusty-security/restricted Translation-en
Conexión http://archive.ubuntu.com trusty Release
Conexión http://archive.ubuntu.com trusty/main Sources
Conexión http://archive.ubuntu.com trusty/restricted Sources
Conexión http://archive.ubuntu.com trusty/multiverse Sources
Conexión http://archive.ubuntu.com trusty/main amd64 Packages
Conexión http://archive.ubuntu.com trusty/restricted amd64 Packages
Conexión http://archive.ubuntu.com trusty/multiverse amd64 Packages
Conexión http://archive.ubuntu.com trusty/main i386 Packages
Conexión http://archive.ubuntu.com trusty/restricted i386 Packages
Conexión http://archive.ubuntu.com trusty/multiverse i386 Packages
Conexión http://archive.canonical.com trusty Release
Conexión http://archive.ubuntu.com trusty/main Translation-en
Conexión http://archive.ubuntu.com trusty/main Translation-es
Conexión http://archive.canonical.com trusty/partner amd64 Packages
Conexión http://archive.ubuntu.com trusty/multiverse Translation-en
Conexión http://archive.canonical.com trusty/partner i386 Packages
Conexión http://archive.ubuntu.com trusty/multiverse Translation-es
Conexión http://archive.canonical.com trusty/partner Translation-en
Conexión http://archive.ubuntu.com trusty/restricted Translation-en
Conexión http://archive.ubuntu.com trusty/restricted Translation-es
Obtenidos 0 B en 6seg. (4.633 kB/s)
Leyendo lista de paquetes... Finalizado
Creando árbol de dependencias
Leyendo la información de estado... Finalizado
Generando estructuras de datos... Finalizado
Actualizando la información del repositorio
Obtener:1 http://archive.ubuntu.com xenial InRelease [247 kB]
Obtener:2 http://archive.canonical.com xenial InRelease [11,5 kB]
Obtener:3 http://archive.canonical.com xenial/partner amd64 Packages [2.708 B]
Obtener:4 http://archive.canonical.com xenial/partner i386 Packages [3.016 B]
Obtener:5 http://archive.canonical.com xenial/partner Translation-en [1.424 B]
Obtener:6 http://archive.ubuntu.com xenial-security InRelease [94,5 kB]
Obtener:7 http://archive.ubuntu.com xenial/main Sources [868 kB]
Obtener:8 http://archive.ubuntu.com xenial/restricted Sources [4.808 B]
Obtener:9 http://archive.ubuntu.com xenial/multiverse Sources [179 kB]
Obtener:10 http://archive.ubuntu.com xenial/main amd64 Packages [1.201 kB]
Obtener:11 http://archive.ubuntu.com xenial/restricted amd64 Packages [8.344 B]
Obtener:12 http://archive.ubuntu.com xenial/multiverse amd64 Packages [144 kB]
Obtener:13 http://archive.ubuntu.com xenial/main i386 Packages [1.196 kB]
Obtener:14 http://archive.ubuntu.com xenial/restricted i386 Packages [8.684 B]
Obtener:15 http://archive.ubuntu.com xenial/multiverse i386 Packages [140 kB]
Obtener:16 http://archive.ubuntu.com xenial/main Translation-en [568 kB]
Obtener:17 http://archive.ubuntu.com xenial/main Translation-es [432 kB]
Obtener:18 http://archive.ubuntu.com xenial/multiverse Translation-en [106 kB]
Obtener:19 http://archive.ubuntu.com xenial/multiverse Translation-es [83,5 kB]
Obtener:20 http://archive.ubuntu.com xenial/restricted Translation-en [2.908 B]
Obtener:21 http://archive.ubuntu.com xenial/restricted Translation-es [2.204 B]
Obtener:22 http://archive.ubuntu.com xenial-security/main Sources [43,9 kB]
Obtener:23 http://archive.ubuntu.com xenial-security/restricted Sources [64 B]
Obtener:24 http://archive.ubuntu.com xenial-security/multiverse Sources [728 B]
Obtener:25 http://archive.ubuntu.com xenial-security/main amd64 Packages [158 kB]
Obtener:26 http://archive.ubuntu.com xenial-security/restricted amd64 Packages [64 B]
Obtener:27 http://archive.ubuntu.com xenial-security/multiverse amd64 Packages [1.176 B]
Obtener:28 http://archive.ubuntu.com xenial-security/main i386 Packages [154 kB]
Obtener:29 http://archive.ubuntu.com xenial-security/restricted i386 Packages [64 B]
Obtener:30 http://archive.ubuntu.com xenial-security/multiverse i386 Packages [1.340 B]
Obtener:31 http://archive.ubuntu.com xenial-security/main Translation-en [65,7 kB]
Obtener:32 http://archive.ubuntu.com xenial-security/multiverse Translation-en [628 B]
Obtener:33 http://archive.ubuntu.com xenial-security/restricted Translation-en [64 B]
Obtenidos 5.729 kB en 6seg. (56,5 kB/s)
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
pedro@pedro-VirtualBox:~$ ubuntu-bug ubuntu-release-upgrader-core
pedro@pedro-VirtualBox:~$
(firefox:12613): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object->ref_count > 0' failed
(firefox:12613): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object->ref_count > 0' failed
(firefox:12613): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object->ref_count > 0' failed
(firefox:12613): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object->ref_count > 0' failed
(/usr/lib/firefox/plugin-container:12667): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object->ref_count > 0' failed
(/usr/lib/firefox/plugin-container:12667): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object->ref_count > 0' failed
(/usr/lib/firefox/plugin-container:12667): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object->ref_count > 0' failed
(/usr/lib/firefox/plugin-container:12667): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object->ref_count > 0' failed
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7 [origin: unknown]
ProcVersionSignature: Ubuntu 3.13.0-51.84-generic 3.13.11-ckt18
Uname: Linux 3.13.0-51-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Sat Oct 22 15:14:34 2016
InstallationDate: Installed on 2013-06-10 (1230 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-10-22 (0 days ago)
Follow this steps, sick back and relax! https:/ /www.digitaloce an.com/ community/ tutorials/ how-to- upgrade- to-ubuntu- 16-04-lts and later you tell us how did it go...
Sigue los pasos de la url de arriba e infórmanos cómo te fue.