WhyJiffie

I'm on it, but my hard drive is overheating!!

entirely free markets result in facebook, google, amazon, but worse, where they have absolutely no restrictions. a. iddle ground is needed, that we don't have currently

9 out of 10 hairdressers agree, what explanation is there needed

these criminals need to be shot down like they do to dogs

oh forgot the second part.

first of all. .pub files are not microsoft owned keyfiles, but Microsoft Office Publisher documents. this is irrelevant now, but this is the only connection of microsoft with .pub files

second of all, .pub files can also be OpenPGP public key files. do you use SSH? look into your ~/.ssh/ directory and you will see them there too. also in /etc/ssh/

You can find multiple instances when they are revoked keys and people on stack exchange are figuring out how to update them to use the toolkit after the change.

yeah, signing keys expire from time to time and then they need to be replaced or updated. but these are not per-user, these are public and cannot be kept in secret. this is not a subscription code, not a DRM either, it's one of those very few exceptions when they are provided for actual security. the packages you download are already signed with the key, if you don't accept the key your package manager just wont be able to verify if they have been tampered with while in transit. if you don't accept the key, you can still install the packages, but then you also need to pass the parameter to your package manager that tells it to not verify the packagesthis time, which is 99.999% of the cases a bad idea.

these warnings are interesting, but -Wno-deprecated-gpu-targets makes me think maybe your card is nearing end of support for CUDA. after that youll need to install an old version of cuda manually (or pin the package versions and risk them silently keeping back other packages too)

what card is it?

also, please take screenshots with the system's screenshot tool because this is so bad. I mean, multi-megabyte screenshots..

also, I don't understand how mirrors, gcc and clang come into picture. or Microsoft

on my distro its common that all repositories use their own signing keys to sign the packages they provide. this includes the nvidia repository. I think here you are prompted to save their key so that your package manager can accept their packages.

I might be wrong, though. next time you could check what happens if you type N. my expectation is that the package manager will throw errors about unverifiable packages

what kind of key file do you mean? where do you see it?