44 lines
2.1 KiB
Nix
44 lines
2.1 KiB
Nix
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# NVIDIA Quadro P400 (Pascal, GP108) on the Mac Pro 3,1: proprietary driver for
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# the Sway desktop, plus Docker with GPU/CUDA access for containers.
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#
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# Driver branch: 580 (nvidiaPackages.legacy_580), NOT the nixpkgs default
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# (`production`, currently 595.x). 580 is the last branch that supports
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# Maxwell/Pascal/Volta -- NVIDIA keeps it as an LTS branch to Aug 2028 -- and a
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# newer branch simply will not drive this card.
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#
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# The driver is unfree, so it is not in the binary cache: the kernel module is
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# compiled locally. On this machine's 2008 Xeons expect the first rebuild after
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# a kernel bump to take a long while.
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{ config, ... }:
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{
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# Selects the proprietary driver; the module blacklists nouveau/nvidiafb and
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# loads nvidia-uvm (needed by CUDA) via modprobe softdep. Naming is historical
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# -- this option drives the kernel/driver choice on Wayland hosts too, which
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# is why it is set on a machine that runs no X server.
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services.xserver.videoDrivers = [ "nvidia" ];
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hardware.nvidia = {
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package = config.boot.kernelPackages.nvidiaPackages.legacy_580;
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# Required for Wayland: sets nvidia-drm.modeset=1 (and fbdev=1), without
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# which wlroots gets no GBM device and Sway/cage fail to start.
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modesetting.enable = true;
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# The open kernel modules need Turing or later; Pascal must use the closed
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# ones. Explicit because the option has no default on driver >= 560.
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open = false;
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};
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# wlroots refuses the proprietary NVIDIA driver unless told to proceed. The
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# greeter's compositor (cage) has no such check; only Sway needs the flag,
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# which the module bakes into the wrapper the session's .desktop file runs.
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programs.sway.extraOptions = [ "--unsupported-gpu" ];
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virtualisation.docker.enable = true;
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# CDI-based GPU access for containers: generates /var/run/cdi specs from the
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# host driver at boot and turns on Docker's CDI feature. Run GPU workloads
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# with `docker run --device=nvidia.com/gpu=all ...`. The deprecated
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# virtualisation.docker.enableNvidia runtime wrapper is deliberately not used.
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hardware.nvidia-container-toolkit.enable = true;
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}
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