Can’t update from nvidia repo:
# curl -sL https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub | apt-key add -
# apt update
...
W: GPG error: https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64 Release: The following signatures were invalid: BADSIG F60F4B3D7FA2AF80 cudatools <cudatools@nvidia.com>
E: The repository 'https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64 Release' is not signed.
Looks like release is broken:
# curl https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/Release.gpg -o Release.gpg
# curl https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/Release -o Release
# curl -sL https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub | gpg --import
# gpg --verify Release.gpg Release
gpg: Signature made Tue Jul 6 23:02:03 2021 UTC
gpg: using RSA key F60F4B3D7FA2AF80
gpg: BAD signature from "cudatools <cudatools@nvidia.com>" [unknown]
But it’s ok for https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/