W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.<br>GPG error: http://archive.canonical.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]>
我发出了以下命令：
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5
并收到以下消息：
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.VE2O5iyxt2 --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5
gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com
gpg: key 437D05B5: "Ubuntu Archive Automatic Signing Key <[email protected]>" 25 new signatures
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: new signatures: 25
尝试了此帖子中的一系列命令：
更新时出现 Apt BADSIG 错误（Ubuntu 存档自动签名密钥）
尝试使用 Y-PPA-Manager：
到现在为止什么都没有起作用。
答案1
发现 PPA 已过期。获取更新的 PPA，替换旧版本，重新运行更新，这次没有错误消息。