Impossibile risolvere l'errore GPG

Ho corso sudo apt-get updatee alla fine ho questi errori:

Fetched 14,3 kB in 54s (264 B/s)
Reading package lists... Done
W: GPG error: http://archive.canonical.com saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A040830F7FAC5991
W: GPG error: http://archive.getdeb.net trusty-getdeb InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A8A515F046D7E7CF
W: GPG error: https://private-ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: http://archive.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-proposed Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32

Sembra che le mie chiavi mancanti siano:

• 40976EAF437D05B5
• 3B4FE6ACC0B21F32
• 16126D3A3E5C1192
• A040830F7FAC5991
• A8A515F046D7E7CF
• E131728675254D99

Ho visto la maggior parte delle risposte dire di correre:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys [MISSING KEY]

Ho corso quello:

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.2LrTHdOU28 --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/amandeepgrewal-notifyosdconfig.gpg --keyring /etc/apt/trusted.gpg.d/apandada1-typhoon.gpg --keyring /etc/apt/trusted.gpg.d/brightbox-ppa.gpg --keyring /etc/apt/trusted.gpg.d/chris-lea-node_js-devel.gpg --keyring /etc/apt/trusted.gpg.d/chris-lea-node_js.gpg --keyring /etc/apt/trusted.gpg.d/colingille-freshlight.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg --keyring /etc/apt/trusted.gpg.d/diesch-testing.gpg --keyring /etc/apt/trusted.gpg.d/duh-golang.gpg --keyring /etc/apt/trusted.gpg.d/ferramroberto-gsharkdown.gpg --keyring /etc/apt/trusted.gpg.d/finalterm-daily.gpg --keyring /etc/apt/trusted.gpg.d/fkrull-deadsnakes.gpg --keyring /etc/apt/trusted.gpg.d/fossfreedom-byzanz.gpg --keyring /etc/apt/trusted.gpg.d/fossfreedom-packagefixes.gpg --keyring /etc/apt/trusted.gpg.d/gophers-go.gpg --keyring /etc/apt/trusted.gpg.d/leolik-leolik.gpg --keyring /etc/apt/trusted.gpg.d/linrunner-tlp.gpg --keyring /etc/apt/trusted.gpg.d/mactel-support-ppa.gpg --keyring /etc/apt/trusted.gpg.d/me-davidsansome-clementine.gpg --keyring /etc/apt/trusted.gpg.d/michael-gruz-canon-trunk.gpg --keyring /etc/apt/trusted.gpg.d/michael-gruz-canon.gpg --keyring /etc/apt/trusted.gpg.d/moka-stable.gpg --keyring /etc/apt/trusted.gpg.d/numix-ppa.gpg --keyring /etc/apt/trusted.gpg.d/nuvola-player-builders-beta.gpg --keyring /etc/apt/trusted.gpg.d/otto-kesselgulasch-gimp-edge.gpg --keyring /etc/apt/trusted.gpg.d/scopes-packagers-ppa.gpg --keyring /etc/apt/trusted.gpg.d/shutter-ppa.gpg --keyring /etc/apt/trusted.gpg.d/steam.gpg --keyring /etc/apt/trusted.gpg.d/sukso96100-budgie-desktop.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-sdk-team-ppa.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-x-swat-x-updates.gpg --keyring /etc/apt/trusted.gpg.d/vajdics-netbeans-installer.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-atom.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-brackets.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-java.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-sublime-text-3.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-themes.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-sublime-text-3.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-themes.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg': resource limit
gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com
gpg: key 437D05B5: "Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

Posso vedere unchanged: 1.
Ho anche provato a utilizzare y-ppa-managerche non ha risolto il problema.

Cosa ha causato questi errori e come posso risolverli?

Questo mi sembra il seguente bug .

Come risolvere

Da un utente che lo ha corretto nella segnalazione bug:

La soluzione che ha funzionato per me era svuotare /etc/apt/trusted.gpg.d, eseguire apt-get update e quindi aggiungere manualmente ogni chiave bloccata sul portachiavi principale /etc/apt/trusted.gpg con apt-key adv come descritto sopra.

Quindi, nel tuo caso, dovresti fare quanto segue (dichiarazione di non responsabilità: impossibile testarlo):

sudo mv /etc/apt/trusted.gpg.d/ /etc/apt/trusted.gpg.d.backup
sudo mkdir /etc/apt/trusted.gpg.d
sudo chmod 755 /etc/apt/trusted.gpg.d

Quindi, per ogni chiave è necessario:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5

dove sostituisci l'hash con l'hash della chiave necessaria. Come notato da Ionică Bizău, è possibile aggiungere più chiavi, separate da uno spazio.

Perché è apparso

Apparentemente, gpg può gestire solo un numero limitato di portachiavi e l'installazione richiede di più. Forse, ciò è causato dall'avere molte fonti alternative di pacchetti.

Ancora una volta, dalla segnalazione di bug:

I asked about the "resource limit" message on the gnupg-users mailing list...
Based on Werner Koch's (the dev) answer...
...the secure apt related programs might be making gpg use more than the maximum number of keyrings that it can handle

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys [MISSING KEY] ha funzionato per me.

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A040830F7FAC5991
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.cmBVPKdUNm --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv-keys A040830F7FAC5991
gpg: requesting key 7FAC5991 from hkp server keyserver.ubuntu.com
gpg: key 7FAC5991: public key "Google, Inc. Linux Package Signing Key <linux-packages-keymaster@google.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1