Saludos de nuevo WHK,parece ser que para pasar de u-14.4 a u-15.4 hay que pasar primero por u-14.10,para ello hay que poner en software y actualizaciones (para cualquier version nueva),ahora si que te ofrece la version u-14.10,pero sale una advertencia que dice:
= Upgrading to a no longer supported version =
You are about to upgrade to a version of Ubuntu that is no longer
supported.
This release of Ubuntu is '''no longer supported''' by Canonical. The
support timeframe is between 9 months and 5 years after the initial
release. You will not receive security updates or critical
bug fixes. See
http://www.ubuntu.com/releaseendoflife for details.
It is still possible to upgrade this version and eventually you will
be able to upgrade to a supported release of Ubuntu.
Alternatively, you may want to consider to reinstalling the machine with
the latest version, for more information on this, visit:
http://www.ubuntu.com/desktop/get-ubuntuFor pre-installed system you may want to contact the manufacturer
for instructions.
== Feedback and Helping ==
If you would like to help shape Ubuntu, take a look at the list of
ways you can participate at
http://www.ubuntu.com/community/participate/Your comments, bug reports, patches and suggestions will help ensure
that our next release is the best release of Ubuntu ever. If you feel
that you have found a bug please read:
http://help.ubuntu.com/community/ReportingBugsThen report bugs using apport in Ubuntu. For example:
ubuntu-bug linux
will open a bug report in Launchpad regarding the linux package.
If you have a question, or if you think you may have found a bug but
aren't sure, first try asking on the #ubuntu or #ubuntu-bugs IRC
channels on Freenode, on the Ubuntu Users mailing list, or on the
Ubuntu forums:
http://help.ubuntu.com/community/InternetRelayChat http://lists.ubuntu.com/mailman/listinfo/ubuntu-users http://www.ubuntuforums.org/== More Information ==
You can find out more about Ubuntu on our website, IRC channel and wiki.
If you're new to Ubuntu, please visit:
http://www.ubuntu.com/To sign up for future Ubuntu announcements, please subscribe to Ubuntu's
very low volume announcement list at:
http://lists.ubuntu.com/mailman/listinfo/ubuntu-announceal traducir:
La actualización a una versión ya no es compatible =
Vas a actualizar a una versión de Ubuntu que ya no es
soportado.
Esta versión de Ubuntu está '' 'ya no es compatible' '' por Canonical. los
apoyo plazo es de entre 9 meses y 5 años después de la inicial
lanzamiento. No recibirá actualizaciones de seguridad o crítica...
le doy a actualizar y me arroja este error en una ventana:
Error al descargar
Ha fallado la descarga de la actualización. Puede haber un problema con la red.
- sin embargo la red funciona.
y en terminal este otro:
Comprobar si hay una nueva versión de Ubuntu
WARNING:root:file 'utopic.tar.gz.gpg' missing
¿ no entiendo nada ?