GPG 错误，签名公钥不可用 尝试了很多

Question

apt-get 更新返回：

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

我已经尝试了许多来自旧问题的推荐解决方案，但似乎没有任何帮助。

• sudo apt-get clean

• sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5（包含所有丢失的密钥）

• 我安装了lauchpad-getkeys，它应该自动恢复密钥

有任何想法吗？

Answer 1

您可能受到错误 1263540的影响。我建议你尝试：

1. sudo apt-get clean
2. sudo mv /var/lib/apt/lists /var/lib/apt/lists.old
3. mkdir -p /var/lib/apt/lists/partial
4. 删除 /etc/apt/trusted.gpg.d/ 中所有 0 长度的文件
5. sudo apt-get 更新

如果不起作用，请恢复步骤 2 中备份的 /var/lib/apt/lists。

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