[RISOLTO] Ubuntu 12.04 Repository non disponibile

[Luthorien]

E' da un po' di giorni che mi appare sulla barra il triangolo rosso con punto esclamativo di attenzione con scritto:
"Le informazioni di aggiornamento non sono disponibili. Questo può essere causato da problemi di rete o da un repository non più disponibile. Per aggiornare manualmente....et cetera"

Io provo a verificare gli aggiornamenti ma mi da un errore di questo tipo:

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W:Failed to fetch http://ppa.launchpad.net/crebs/ppa/ubuntu/dists/precise/main/source/Sources  404  Not Found
W:Failed to fetch http://ppa.launchpad.net/crebs/ppa/ubuntu/dists/precise/main/binary-i386/Packages  404  Not Found
E:Some index files failed to download. They have been ignored, or old ones used instead.

Non ho problemi particolari di connessione, come posso risolvere? Inoltre ottengo lo stesso errore quando faccio la verifica di nuovi aggiornamenti...Un aiuto per favore?

[Robbonzo]

Ci sono problemi con quel ppa che ti indica nell'errore. Eliminalo e prova ad aggiornare.

[derma]

Potresti postare il tuo "sources.list" e provare a cambiare server?

[Luthorien]

Non è che potete spiegarmi meglio cosa fare? Non sono molto bravo in queste cose....il sources.list è il file in /etc/apt/ ?

[derma]

Apri un Terminale e scrivi...

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cat /etc/apt/sources.list

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ls -al /etc/apt/sources.list.d

...poi, in Synaptic... "Impostazioni → Repository → Software per Ubuntu (1^ scheda) → Scaricare da".

[Luthorien]

sources.list:

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# deb cdrom:[Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)]/ natty main restricted
deb-src http://archive.ubuntu.com/ubuntu precise restricted main #Added by software-properties
# deb cdrom:[Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)]/ natty main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://it.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://it.archive.ubuntu.com/ubuntu/ precise restricted main multiverse universe #Added by software-properties

## Major bug fix updates produced after the final release of the
## distribution.
deb http://it.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://it.archive.ubuntu.com/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ precise universe
deb http://it.archive.ubuntu.com/ubuntu/ precise-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://it.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://it.archive.ubuntu.com/ubuntu/ precise-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://it.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security restricted main multiverse universe #Added by software-properties
deb http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu precise partner
deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

## Major bug fix updates produced after the final release of the
## distribution.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://it.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse


## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu precise partner
deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.

sources.list.d/

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crebs-ppa-natty.list.distUpgrade  dropbox.list
dropbox.list.distUpgrade          
atareao-atareao-precise.list.save
atareao-atareao-precise.list      
crebs-ppa-natty.list.save
crebs-ppa-natty.list              
dropbox.list.save
crebs-ppa-precise.list

Mi dava il server italiano, ho impostato il server principale....
Aggiornato e mi dice ancora:

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Impossibile recuperare http://ppa.launchpad.net/crebs/ppa/ubuntu/dists/precise/main/source/Sources  404  Not Found
Impossibile recuperare http://ppa.launchpad.net/crebs/ppa/ubuntu/dists/precise/main/binary-i386/Packages  404  Not Found
Impossibile scaricare alcuni file di indice: saranno ignorati o verranno usati quelli vecchi.

Comunque io avevo rimosso CREBS, quindi può essere che non abbia rimosso qualche componente?

[derma]

Apri un Terminale e scrivi...

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gksudo gedit /etc/apt/sources.list

...cancella il contenuto del file e incolla quanto segue...

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# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu precise main restricted
deb-src http://archive.ubuntu.com/ubuntu precise main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu precise-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu precise-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu precise universe
deb-src http://archive.ubuntu.com/ubuntu precise universe
deb http://archive.ubuntu.com/ubuntu precise-updates universe
deb-src http://archive.ubuntu.com/ubuntu precise-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu precise multiverse
deb-src http://archive.ubuntu.com/ubuntu precise multiverse
deb http://archive.ubuntu.com/ubuntu precise-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu precise-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.

deb http://archive.ubuntu.com/ubuntu precise-security main restricted
deb-src http://archive.ubuntu.com/ubuntu precise-security main restricted
deb http://archive.ubuntu.com/ubuntu precise-security universe
deb-src http://archive.ubuntu.com/ubuntu precise-security universe
deb http://archive.ubuntu.com/ubuntu precise-security multiverse
deb-src http://archive.ubuntu.com/ubuntu precise-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu precise partner
# deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

...poi, sempre in un Terminale...

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cd /etc/apt/sources.list.d/

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sudo rm crebs*

...quindi rifai l'update.

[Robbonzo]

Apri il Software Center. Vai in Modifica -> Sorgenti software. Nella seconda scheda, "Altro software" togli la spunta a quei ppa, dovresti riconoscerli. Poi provi a dare un bel

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sudo apt-get update && sudo apt-get upgrade

[Luthorien]

Ok!
Sparito il simbolo e finalmente aggiornate le informazioni! Grazie mille!!

Non è che puoi spiegarmi in parole povere cosa mi hai fatto cambiare nel sources.list?

Scusami Robbonzo, ma ho già seguito i consiglio di derma ed ora tutto funziona! Grazie comunque per l'aiuto!

[derma]

Il "sources.list" che stavi adoperando presentava repo che non dovevano essere aperti/attivati o che facevano riferimento a versioni precedenti di Ubuntu... i repo di CreBS sono disponibili per NN, li hai eliminati giacché erano stati "trattati" durante l'upgrade.

[Luthorien]

Ok, grazie ancora!