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不受信任的软件包警告

tag-icon • tag-icon 15.04 packaging gnupg
不受信任的软件包警告

当我尝试更新系统时收到以下警告：

W: GPG error: http://archive.canonical.com vivid 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
W: GPG error: http://security.ubuntu.com precise-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
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://security.ubuntu.com vivid-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://ubuntu.mirror.lhisp.com vivid 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://ubuntu.mirror.lhisp.com vivid-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://ubuntu.mirror.lhisp.com vivid-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: http://ubuntu.mirror.lhisp.com vivid-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32

我尝试使用以下方法添加丢失的键：

sudo gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys KEY_VALUE

我收到以下消息，

gpg: requesting key C0B21F32 from hkp server keyserver.ubuntu.com 
gpg: key C0B21F32: "Ubuntu Archive Automatic Signing Key (2012) <[email protected]>" not changed 
gpg: Total number processed: 1
gpg:              unchanged: 1

我也尝试过这个解决方案：

sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get clean
sudo apt-get update

但我仍然收到上述警告。

答案1

有一个漏洞描述你的情况。

一个可以帮助解决的解决方法

导航到目录/etc/apt/trusted.gpg.d/并删除未使用的键。

读这了解更多信息

答案2

当镜像服务器尚未完全更新时，就会发生这种情况。

您可以稍后再尝试，或者切换到另一个镜像

系统设置->软件和更新。

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