Sto usando Ubuntu 11.04. Il gestore degli aggiornamenti una volta ha trovato la nuova versione "oneiric" e mostra ancora questa schermata quando accedo usando ssh:
Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-14-generic x86_64)
* Documentation: https://help.ubuntu.com/
0 packages can be updated.
0 updates are security updates.
New release 'oneiric' available.
Run 'do-release-upgrade' to upgrade to it.
Last login: Wed Apr 25 16:22:48 2012 from ***
Ma allora non ho aggiornato e ho cambiato le mie fonti apt. E ora non posso passare a "oneirico". do-relase-upgrade mostra:
$ sudo do-release-upgrade
Checking for a new ubuntu release
No new release found
$
E apt-get dist-upgrade mostra:
$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
$
Posso aggiornare con successo tutti i miei pacchetti.
Contenuto del file di source.list:
$ cat /etc/apt/sources.list
## See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted
# deb http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse
# deb http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted
# deb http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted
# deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted
# CDROMs are managed through the apt-cdrom tool.
# deb http://archive.canonical.com lucid partner
# deb http://archive.canonical.com lucid-security partner
# deb http://archive.canonical.com lucid-updates partner
# deb-src http://archive.canonical.com lucid partner
# deb-src http://archive.canonical.com lucid-security partner
# deb-src http://archive.canonical.com lucid-updates partner
#medibuntu repo
# deb http://packages.medibuntu.org/ lucid free non-free
# deb-src http://packages.medibuntu.org/ lucid free non-free
# deb http://extras.ubuntu.com/ubuntu maverick main #Third party developers repository
deb http://mirrors.sohu.com/ubuntu/ natty main restricted multiverse universe
deb-src http://mirrors.sohu.com/ubuntu/ natty main universe restricted multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu/ natty-security universe main multiverse restricted
deb-src http://mirrors.sohu.com/ubuntu/ natty-security universe main multiverse restricted
deb http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted
deb-src http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted
Contenuto del file di /etc/update-manager/meta-release:
$ cat /etc/update-manager/meta-release
# default location for the meta-release file
[METARELEASE]
URI = http://changelogs.ubuntu.com/meta-release
URI_LTS = http://changelogs.ubuntu.com/meta-release-lts
URI_UNSTABLE_POSTFIX = -development
URI_PROPOSED_POSTFIX = -proposed
Quale potrebbe essere il problema?
Correlati:problemi di grafica e di sospensione su Dell Inspiron 15 UHD?Migliore risposta
Per eseguire l'aggiornamento da Ubuntu 11.10 o Ubuntu 10.04 LTS su un server o sistema:installa update-manager-core pacchetto se non è già installato; avvia lo strumento di aggiornamento con il comando sudo do-release-upgrade -d; e segui le istruzioni sullo schermo. Si noti che l'aggiornamento del server ora è più robusto e utilizzerà lo schermo GNU e si ricollegherà automaticamente in caso, ad es. problemi di connessione interrotti.