Erro ao atualizar via terminal [duplicado]

Question

( Translation )

Tendo problemas quando atualizo o sistema através do terminal:

sudo apt-get update

W: GPG error: http://ppa.launchpad.net natty Release: The following signatures could not be verified because the public key is not available: NO_PUBKEY 5A9A06AEF9CB8DB0
(/ var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-amd64_Packages)
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ natty / i386 partner Packages (/ var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-i386_Packages)

Eu sou talvez muitos repositórios?

( postagem original )

habe nen Problema beim update des systems via terminal: sudo apt-get update

Entre para saber mais sobre Fehlermeldung:

W: GPG-Fehler: http://ppa.launchpad.net oneiric Release: Die folgenden Signaturen konnten nicht überprüft werden, weil ihr öffentlicher Schlüssel nicht verfügbar ist: NO_PUBKEY 5A9A06AEF9CB8DB0
(/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-amd64_Packages)
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ oneiric/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-i386_Packages)

habe ich evtl zu viele repositórios?

Kann mir jemand weiterhelfen?!

Beste Grüße

    

Answer 1

O motivo é que essa chave pública não foi adicionada.

Obtenha a chave pública. Que no seu caso é 5A9A06AEF9CB8DB0

Agora adicione-o, digitando este comando no terminal

sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com 5A9A06AEF9CB8DB0

Agora atualize:

sudo apt-get update

Fonte: link