"Erreur GPG" lors de l'exécution de "Sudo apt-fast update"
Un jour, j’ai découvert des messages d’erreur comme ci-dessous, je ne sais pas ce qui s’est passé, quelle est la solution pour vérifier la réparation, et j’ai besoin de votre aide.
.............
Err http://ppa.launchpad.net saucy/main AMD64 Packages
404 Not Found
Err http://ppa.launchpad.net saucy/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net saucy/main Translation-en_US
Ign http://ppa.launchpad.net saucy/main Translation-en
Fetched 1,498 kB in 2min 56s (8,478 B/s)
Reading package lists... Done
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://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://www.geogebra.net stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C072A32983A736CF
W: GPG error: http://deb.torproject.org saucy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 74A941BA219EC810
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 saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
W: GPG error: http://archive.ubuntu.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://archive.ubuntu.com saucy-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 saucy-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com saucy-proposed Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: https://private-ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: http://ppa.launchpad.net saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8FC2C0DC77296259
W: Failed to fetch https://ppa.launchpad.net/clamtk/dists/saucy/main/binary-AMD64/Packages
W: Failed to fetch https://ppa.launchpad.net/clamtk/dists/saucy/main/binary-i386/Packages
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/saucy-proposed/Release
W: Failed to fetch http://ppa.launchpad.net/birdie-team/stable/ubuntu/dists/saucy/main/binary-AMD64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/birdie-team/stable/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/clicompanion-devs/clicompanion-nightlies/ubuntu/dists/saucy/main/binary-AMD64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/clicompanion-devs/clicompanion-nightlies/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/openshot.developers/ppa/ubuntu/dists/saucy/main/binary-AMD64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/openshot.developers/ppa/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ubuntu-vn/ppa/ubuntu/dists/saucy/main/binary-AMD64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ubuntu-vn/ppa/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ylatuya/ppa/ubuntu/dists/saucy/main/binary-AMD64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ylatuya/ppa/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found
W: Some index files failed to download. They have been ignored, or old ones used instead.
En outre, il se produit régulièrement un message comme ci-dessous: 
A suivi la section intitulée "Comment éliminer ces erreurs" , certains PPA ont été corrigés, pas tous, puis a suivi Danilo sur la même page pour désactiver tous vos PPA:
Finalement, je me rends compte que mon instance d'erreur est "Les signatures suivantes n'ont pas pu être vérifiées car la clé publique n'est pas disponible: NO_PUBKEY ......."
Ign http://archive.ubuntu.com saucy-proposed/universe Translation-en_US
Fetched 27.6 MB in 1min 36s (287 kB/s)
Reading package lists... Done
W: GPG error: http://archive.ubuntu.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://archive.ubuntu.com saucy-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 saucy-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 saucy-proposed Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
Comment devrais-je résoudre ce problème?
:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 13.10 _Saucy Salamander_ - Release AMD64 (20131016.1)]/ saucy 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 saucy main restricted
deb-src http://archive.ubuntu.com/ubuntu saucy main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu saucy-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu saucy-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 saucy universe
deb-src http://archive.ubuntu.com/ubuntu saucy universe
deb http://archive.ubuntu.com/ubuntu saucy-updates universe
deb-src http://archive.ubuntu.com/ubuntu saucy-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 saucy multiverse
deb-src http://archive.ubuntu.com/ubuntu saucy multiverse
deb http://archive.ubuntu.com/ubuntu saucy-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu saucy-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 saucy-security main restricted
deb-src http://archive.ubuntu.com/ubuntu saucy-security main restricted
deb http://archive.ubuntu.com/ubuntu saucy-security universe
deb-src http://archive.ubuntu.com/ubuntu saucy-security universe
deb http://archive.ubuntu.com/ubuntu saucy-security multiverse
deb-src http://archive.ubuntu.com/ubuntu saucy-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 saucy partner
deb-src http://archive.canonical.com/ubuntu saucy 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 saucy main
deb-src http://extras.ubuntu.com/ubuntu saucy main
# deb https://ppa.launchpad.net/clamtk saucy main
# deb-src https://ppa.launchpad.net/clamtk saucy main
deb http://deb.torproject.org/torproject.org saucy main
deb http://archive.ubuntu.com/ubuntu saucy-proposed universe main restricted multiverse
Et :~$ cat /etc/apt/sources.list.d/*.list
deb http://ppa.launchpad.net/apt-fast/stable/ubuntu saucy main
deb-src http://ppa.launchpad.net/apt-fast/stable/ubuntu saucy main
deb http://ppa.launchpad.net/atareao/atareao/ubuntu saucy main
deb-src http://ppa.launchpad.net/atareao/atareao/ubuntu saucy main
# deb http://ppa.launchpad.net/birdie-team/stable/ubuntu saucy main
# deb-src http://ppa.launchpad.net/birdie-team/stable/ubuntu saucy main
deb http://ppa.launchpad.net/cairo-dock-team/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/cairo-dock-team/ppa/ubuntu saucy main
deb http://ppa.launchpad.net/ehoover/compholio/ubuntu saucy main
deb-src http://ppa.launchpad.net/ehoover/compholio/ubuntu saucy main
deb http://ppa.launchpad.net/ffdiaporamateam/stable/ubuntu saucy main
deb-src http://ppa.launchpad.net/ffdiaporamateam/stable/ubuntu saucy main
deb http://ppa.launchpad.net/fossfreedom/packagefixes/ubuntu saucy main
deb-src http://ppa.launchpad.net/fossfreedom/packagefixes/ubuntu saucy main
deb http://ppa.launchpad.net/fossfreedom/rhythmbox-plugins/ubuntu saucy main
deb-src http://ppa.launchpad.net/fossfreedom/rhythmbox-plugins/ubuntu saucy main
deb http://ppa.launchpad.net/fossfreedom/rhythmbox/ubuntu saucy main
deb-src http://ppa.launchpad.net/fossfreedom/rhythmbox/ubuntu saucy main
deb http://ppa.launchpad.net/gabriel1984sibiu/aplicatii/ubuntu saucy main
# deb-src http://ppa.launchpad.net/gabriel1984sibiu/aplicatii/ubuntu saucy main
### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb http://www.geogebra.net/linux/ stable main
deb http://dl.google.com/linux/chrome/deb/ stable main
### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
#deb http://dl.google.com/linux/talkplugin/deb/ stable main
deb http://ppa.launchpad.net/gstreamer-developers/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/gstreamer-developers/ppa/ubuntu saucy main
deb http://ppa.launchpad.net/jacob/media/ubuntu saucy main
deb-src http://ppa.launchpad.net/jacob/media/ubuntu saucy main
# deb http://ppa.launchpad.net/landronimirc/clamtk/ubuntu saucy main
# deb-src http://ppa.launchpad.net/landronimirc/clamtk/ubuntu saucy main
deb http://ppa.launchpad.net/libreoffice/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/libreoffice/ppa/ubuntu saucy main
deb http://ppa.launchpad.net/linrunner/tlp/ubuntu saucy main
deb http://ppa.launchpad.net/me-davidsansome/clementine/ubuntu saucy main
deb-src http://ppa.launchpad.net/me-davidsansome/clementine/ubuntu saucy main
## Please report any bug on https://bugs.launchpad.net/medibuntu/
deb http://ppa.launchpad.net/mqchael/pipelight/ubuntu saucy main
deb-src http://ppa.launchpad.net/mqchael/pipelight/ubuntu saucy main
deb http://ppa.launchpad.net/nathan-renniewaldock/xbmc-stable/ubuntu saucy main
deb-src http://ppa.launchpad.net/nathan-renniewaldock/xbmc-stable/ubuntu saucy main
deb http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu saucy main
deb-src http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu saucy main
# deb http://ppa.launchpad.net/no1wantdthisname/openjdk-fontfix/ubuntu saucy main
# deb-src http://ppa.launchpad.net/no1wantdthisname/openjdk-fontfix/ubuntu saucy main
deb http://ppa.launchpad.net/noobslab/pear-apps/ubuntu saucy main
deb-src http://ppa.launchpad.net/noobslab/pear-apps/ubuntu saucy main
deb http://ppa.launchpad.net/nuvola-player-builders/stable/ubuntu saucy main
deb-src http://ppa.launchpad.net/nuvola-player-builders/stable/ubuntu saucy main
deb http://ppa.launchpad.net/nvbn-rm/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/nvbn-rm/ppa/ubuntu saucy main
# This file makes sure that Opera Browser is kept up-to-date
# as part of regular system upgrades
# The line above will make sure you get all final public releases.
# Uncomment the following line if you want to get alpha and beta
# releases, too.
deb http://ppa.launchpad.net/peterlevi/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/peterlevi/ppa/ubuntu saucy main
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/able2extract/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/chess/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/color-by-numbers-halloween-free/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/master-pdf-editor/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/minitube-ubuntu/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/outreel/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/splashtop-client/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/varicad-viewer/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb https://private-ppa.launchpad.net/commercial-ppa-uploaders/wuala/ubuntu saucy main #Added by software-center; credentials stored in /etc/apt/auth.conf
deb http://ppa.launchpad.net/rvm/smplayer/ubuntu saucy main
deb-src http://ppa.launchpad.net/rvm/smplayer/ubuntu saucy main
deb http://ppa.launchpad.net/saiarcot895/myppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/saiarcot895/myppa/ubuntu saucy main
deb http://ppa.launchpad.net/skunk/pepper-flash/ubuntu saucy main
deb-src http://ppa.launchpad.net/skunk/pepper-flash/ubuntu saucy main
deb http://ppa.launchpad.net/skype-wrapper/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/skype-wrapper/ppa/ubuntu saucy main
deb http://ppa.launchpad.net/tualatrix/ppa/ubuntu saucy main
deb-src http://ppa.launchpad.net/tualatrix/ppa/ubuntu saucy main
# deb http://ppa.launchpad.net/ubuntu-vn/ppa/ubuntu saucy main
# deb-src http://ppa.launchpad.net/ubuntu-vn/ppa/ubuntu saucy main
deb http://ppa.launchpad.net/videolan/stable-daily/ubuntu saucy main
deb http://ppa.launchpad.net/vincent-c/cherrytree/ubuntu saucy main
deb-src http://ppa.launchpad.net/vincent-c/cherrytree/ubuntu saucy main
deb http://ppa.launchpad.net/webupd8team/Java/ubuntu saucy main
deb-src http://ppa.launchpad.net/webupd8team/Java/ubuntu saucy main
deb-src http://ppa.launchpad.net/webupd8team/Java/ubuntu saucy main
deb http://ppa.launchpad.net/webupd8team/tor-browser/ubuntu saucy main
deb-src http://ppa.launchpad.net/webupd8team/tor-browser/ubuntu saucy main
deb http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu saucy main
deb-src http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu saucy main
deb http://ppa.launchpad.net/wfg/0ad/ubuntu saucy main
deb-src http://ppa.launchpad.net/wfg/0ad/ubuntu saucy main
# deb http://ppa.launchpad.net/ylatuya/ppa/ubuntu saucy main
# deb-src http://ppa.launchpad.net/ylatuya/ppa/ubuntu saucy main
Voici une procédure testée, étape par étape, pour éliminer cette erreur GPG:
supprimez tous les fichiers de clés dans le répertoire suivant: "/etc/apt/trusted.gpg.d":
Sudo rm /etc/apt/trusted.gpg.d/*installez y-ppa-manager:
Sudo add-apt-repository ppa:webupd8team/y-ppa-manager Sudo apt-get update Sudo apt-get install y-ppa-managerlancez-le:
gksudo y-ppa-managerfaites défiler vers le bas et sélectionnez "Avancé"
sélectionnez maintenant "Essayer d'importer toutes les clés GPG manquantes" et cliquez sur OK.
Cela pourrait prendre une minute ou deux. vous recevrez une notification quand c'est fait.
mettre à jour apt:
Sudo apt-get updateplus d'erreurs NO_PUBKEY :)
p.s: le problème semble lié à this bug.