问题: cudnn GPG error
Reading package lists... Done
W: GPG error: file:/var/cudnn-local-repo-ubuntu2204-8.8.0.121 InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 91B24998B66125A0
E: The repository 'file:/var/cudnn-local-repo-ubuntu2204-8.8.0.121 InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
解决方案
找到 /var 目录下对应的 cudnn* 文件夹，然后执行如下命令文章来源：https://www.toymoban.com/news/detail-661367.html
sudo cp /var/cudnn-local-repo-ubuntu2204-8.8.0.121/*.gpg /usr/share/keyrings/
sudo apt update
sudo apt upgrade
【参考】
W: GPG error: cudnn GPG key 错误文章来源地址https://www.toymoban.com/news/detail-661367.html
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