199 lines
7.5 KiB
Nix
199 lines
7.5 KiB
Nix
# This module provides the proprietary NVIDIA X11 / OpenGL drivers.
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{ stdenv, config, lib, pkgs, ... }:
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with lib;
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let
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drivers = config.services.xserver.videoDrivers;
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# FIXME: should introduce an option like
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# ‘hardware.video.nvidia.package’ for overriding the default NVIDIA
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# driver.
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nvidiaForKernel = kernelPackages:
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if elem "nvidia" drivers then
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kernelPackages.nvidia_x11
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else if elem "nvidiaBeta" drivers then
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kernelPackages.nvidia_x11_beta
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else if elem "nvidiaLegacy304" drivers then
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kernelPackages.nvidia_x11_legacy304
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else if elem "nvidiaLegacy340" drivers then
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kernelPackages.nvidia_x11_legacy340
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else if elem "nvidiaLegacy390" drivers then
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kernelPackages.nvidia_x11_legacy390
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else null;
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nvidia_x11 = nvidiaForKernel config.boot.kernelPackages;
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nvidia_libs32 =
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if versionOlder nvidia_x11.version "391" then
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((nvidiaForKernel pkgs.pkgsi686Linux.linuxPackages).override { libsOnly = true; kernel = null; }).out
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else
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(nvidiaForKernel config.boot.kernelPackages).lib32;
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enabled = nvidia_x11 != null;
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cfg = config.hardware.nvidia;
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optimusCfg = cfg.optimus_prime;
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in
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{
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options = {
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hardware.nvidia.modesetting.enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Enable kernel modesetting when using the NVIDIA proprietary driver.
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Enabling this fixes screen tearing when using Optimus via PRIME (see
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<option>hardware.nvidia.optimus_prime.enable</option>. This is not enabled
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by default because it is not officially supported by NVIDIA and would not
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work with SLI.
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'';
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};
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hardware.nvidia.optimus_prime.enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Enable NVIDIA Optimus support using the NVIDIA proprietary driver via PRIME.
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If enabled, the NVIDIA GPU will be always on and used for all rendering,
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while enabling output to displays attached only to the integrated Intel GPU
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without a multiplexer.
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Note that this option only has any effect if the "nvidia" driver is specified
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in <option>services.xserver.videoDrivers</option>, and it should preferably
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be the only driver there.
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If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be
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specified (<option>hardware.nvidia.optimus_prime.nvidiaBusId</option> and
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<option>hardware.nvidia.optimus_prime.intelBusId</option>).
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If you enable this, you may want to also enable kernel modesetting for the
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NVIDIA driver (<option>hardware.nvidia.modesetting.enable</option>) in order
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to prevent tearing.
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Note that this configuration will only be successful when a display manager
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for which the <option>services.xserver.displayManager.setupCommands</option>
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option is supported is used; notably, SLiM is not supported.
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'';
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};
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hardware.nvidia.optimus_prime.nvidiaBusId = lib.mkOption {
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type = lib.types.string;
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default = "";
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example = "PCI:1:0:0";
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description = ''
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Bus ID of the NVIDIA GPU. You can find it using lspci; for example if lspci
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shows the NVIDIA GPU at "01:00.0", set this option to "PCI:1:0:0".
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'';
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};
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hardware.nvidia.optimus_prime.intelBusId = lib.mkOption {
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type = lib.types.string;
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default = "";
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example = "PCI:0:2:0";
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description = ''
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Bus ID of the Intel GPU. You can find it using lspci; for example if lspci
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shows the Intel GPU at "00:02.0", set this option to "PCI:0:2:0".
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'';
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};
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};
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config = mkIf enabled {
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assertions = [
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{
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assertion = with config.services.xserver.displayManager; gdm.enable -> !gdm.wayland;
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message = "NVIDIA drivers don't support wayland, set services.xserver.displayManager.gdm.wayland=false";
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}
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{
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assertion = !optimusCfg.enable ||
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(optimusCfg.nvidiaBusId != "" && optimusCfg.intelBusId != "");
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message = ''
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When NVIDIA Optimus via PRIME is enabled, the GPU bus IDs must configured.
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'';
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}
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];
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# If Optimus/PRIME is enabled, we:
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# - Specify the configured NVIDIA GPU bus ID in the Device section for the
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# "nvidia" driver.
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# - Add the AllowEmptyInitialConfiguration option to the Screen section for the
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# "nvidia" driver, in order to allow the X server to start without any outputs.
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# - Add a separate Device section for the Intel GPU, using the "modesetting"
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# driver and with the configured BusID.
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# - Reference that Device section from the ServerLayout section as an inactive
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# device.
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# - Configure the display manager to run specific `xrandr` commands which will
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# configure/enable displays connected to the Intel GPU.
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services.xserver.drivers = singleton {
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name = "nvidia";
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modules = [ nvidia_x11.bin ];
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libPath = [ nvidia_x11 ];
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deviceSection = optionalString optimusCfg.enable
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''
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BusID "${optimusCfg.nvidiaBusId}"
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'';
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screenSection =
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''
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Option "RandRRotation" "on"
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${optionalString optimusCfg.enable "Option \"AllowEmptyInitialConfiguration\""}
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'';
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};
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services.xserver.extraConfig = optionalString optimusCfg.enable
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''
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Section "Device"
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Identifier "nvidia-optimus-intel"
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Driver "modesetting"
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BusID "${optimusCfg.intelBusId}"
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Option "AccelMethod" "none"
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EndSection
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'';
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services.xserver.serverLayoutSection = optionalString optimusCfg.enable
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''
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Inactive "nvidia-optimus-intel"
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'';
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services.xserver.displayManager.setupCommands = optionalString optimusCfg.enable ''
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# Added by nvidia configuration module for Optimus/PRIME.
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${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource modesetting NVIDIA-0
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${pkgs.xorg.xrandr}/bin/xrandr --auto
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'';
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environment.etc."nvidia/nvidia-application-profiles-rc" = mkIf nvidia_x11.useProfiles {
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source = "${nvidia_x11.bin}/share/nvidia/nvidia-application-profiles-rc";
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};
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hardware.opengl.package = nvidia_x11.out;
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hardware.opengl.package32 = nvidia_libs32;
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environment.systemPackages = [ nvidia_x11.bin nvidia_x11.settings ]
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++ lib.filter (p: p != null) [ nvidia_x11.persistenced ];
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boot.extraModulePackages = [ nvidia_x11.bin ];
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# nvidia-uvm is required by CUDA applications.
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boot.kernelModules = [ "nvidia-uvm" ] ++
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lib.optionals config.services.xserver.enable [ "nvidia" "nvidia_modeset" "nvidia_drm" ];
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# If requested enable modesetting via kernel parameter.
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boot.kernelParams = optional cfg.modesetting.enable "nvidia-drm.modeset=1";
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# Create /dev/nvidia-uvm when the nvidia-uvm module is loaded.
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services.udev.extraRules =
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''
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KERNEL=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidiactl c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 255'"
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KERNEL=="nvidia_modeset", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-modeset c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 254'"
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KERNEL=="card*", SUBSYSTEM=="drm", DRIVERS=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%n c $(grep nvidia-frontend /proc/devices | cut -d \ -f 1) %n'"
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KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm c $(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
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'';
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boot.blacklistedKernelModules = [ "nouveau" "nvidiafb" ];
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services.acpid.enable = true;
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};
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}
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