apt-get update inside Ubuntu 18.04, I have the following error:
W: GPG error: https://developer.download.nvidia.cn/compute/cuda/repos/ubuntu1804/x86_64 InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY A4B469963BF863CC
E: The repository ‘https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 InRelease’ is no longer 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.
This is because Nvidia is changing their public keys for their repositories, see the details here. The instructions in the original post does not work for me. I still see errors after running the command. Since I am building a Docker image, I followed the instructions here and it works:
RUN rm /etc/apt/sources.list.d/cuda.list RUN rm /etc/apt/sources.list.d/nvidia-ml.list RUN apt-key del 7fa2af80 RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
rm commands are crucial to fix the issue.
/etc/apt/sources.list.d/ stores the apt repository list for some packages,
so that you do not need to touch the main source list file
Files under this directory has the same format as the main
and they are usually added by automated tools.
apt-key del 7fa2af80 will delete the old public key for Nvidia.
apt-key adv --fetch-keys commands is used to add the new public keys for Nvidia.
- The use of directory
- update public key using apt-key: https://askubuntu.com/a/865494/768311
- apt-key doc: http://manpages.ubuntu.com/manpages/bionic/man8/apt-key.8.html
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