After an OS upgrade, an application (Sunshine) that uses the GPU no longer functions correctly. When running the application (post system upgrade) it now complains with:
* Error: Failed to create a CUDA device: Unknown error occurred
* Fatal: Couldn't find any encoder matching [nvenc]
When I reboot the machine, and select the previous generation, the application works as expected. I believe I’ve tracked this down to an Nvidia driver upgrade.
I’d like to validate this assumption by pinning the Nvidia driver, however I may have reached the limits of my knowledge on the nix language.
Here is the expression that I would like to override this section:
Context: nixpkgs/default.nix at d0d55259081f0b97c828f38559cad899d351cad1 · NixOS/nixpkgs · GitHub
production = generic {
version = "525.89.02";
sha256_64bit = "sha256-DkEsiMW9mPhCqDmm9kYU8g5MCVDvfP+xKxWKcWM1k+k=";
openSha256 = "sha256-MP9ir0Fuodar239r3PbqVxIHd0vHvpDj8Rw55TeFtZM=";
settingsSha256 = "sha256-7rHaJWm0XHJXsKL8VnU9XT15t/DU8jdsCXQwQT+KaV0=";
persistencedSha256 = "sha256-4AmOL6b3GKCjGs6bRDpQAkEG4n41X395znyQF1x9VEs=";
};
Here is how i attempted to override the expression:
hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.production.overrideAttrs (oldAttrs: rec {
version = "525.60.11";
persistencedVersion = "525.60.11";
settingsVersion = "525.60.11";
sha256_64bit = "<some-new-sha256>";
openSha256 = "<some-new-sha256>";
settingsSha256 = "<some-new-sha256>";
persistencedSha256 = "<some-new-sha256>";
url = "https://us.download.nvidia.com/XFree86/Linux-x86_64/525.60.11/NVIDIA-Linux-x86_64-525.60.11.run";
});
This does not seem to work, as it ignores my inputs and uses whatever the variables are from the nix repository.
Any ideas on how to move forward here?
I do have the old driver in the /nix/store, but i have no idea how or if i can reference the old derivation.
cross-post: https://www.reddit.com/r/NixOS/comments/118g7o6/can_i_downgrade_the_nvidia_driver