O apt-get update retorna:
W: GPG error: http://pl.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://pl.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://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://deb.torproject.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EE8CBC9E886DDD89
W: GPG error: http://security.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://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
Eu tentei muitas soluções recomendadas de perguntas antigas, mas nada parece ajudar.
sudo apt-get clean
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 (com todas as chaves ausentes)
Eu instalei o lauchpad-getkeys, que deve restaurar as chaves automaticamente
Alguma ideia?
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.ux3Y2CVCoP --no-auto-check-trustdb --trust-model always
(lista aparado de repositórios) gpg: keyblock resource /etc/apt/trusted.gpg.d/xorg-edgers-ppa.gpg: resource limit gpg: keyblock resource /etc/apt/trusted.gpg.d/yktooo-ppa.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
40976EAF437D05B5
é extremamente teimosa e difícil de corrigir, portanto, o Q 13065 cobre apenas os casos em que o OP já tentou várias vezes. É como se você me desse uma chave de fenda Pozidriv quando eu precisar de uma Torx. ;)