# This module provides the proprietary NVIDIA X11 / OpenGL drivers.
{ config, lib, pkgs, ... }:
with lib;
let
drivers = config.services.xserver.videoDrivers;
# FIXME: should introduce an option like
# ‘hardware.video.nvidia.package’ for overriding the default NVIDIA
# driver.
nvidiaForKernel = kernelPackages:
if elem "nvidia" drivers then
kernelPackages.nvidia_x11
else if elem "nvidiaBeta" drivers then
kernelPackages.nvidia_x11_beta
else if elem "nvidiaVulkanBeta" drivers then
kernelPackages.nvidia_x11_vulkan_beta
else if elem "nvidiaLegacy304" drivers then
kernelPackages.nvidia_x11_legacy304
else if elem "nvidiaLegacy340" drivers then
kernelPackages.nvidia_x11_legacy340
else if elem "nvidiaLegacy390" drivers then
kernelPackages.nvidia_x11_legacy390
else null;
nvidia_x11 = nvidiaForKernel config.boot.kernelPackages;
nvidia_libs32 =
if versionOlder nvidia_x11.version "391" then
((nvidiaForKernel pkgs.pkgsi686Linux.linuxPackages).override { libsOnly = true; kernel = null; }).out
else
(nvidiaForKernel config.boot.kernelPackages).lib32;
enabled = nvidia_x11 != null;
cfg = config.hardware.nvidia;
pCfg = cfg.prime;
syncCfg = pCfg.sync;
offloadCfg = pCfg.offload;
primeEnabled = syncCfg.enable || offloadCfg.enable;
nvidiaPersistencedEnabled = cfg.nvidiaPersistenced;
in
{
imports =
[
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "enable" ] [ "hardware" "nvidia" "prime" "sync" "enable" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "allowExternalGpu" ] [ "hardware" "nvidia" "prime" "sync" "allowExternalGpu" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "nvidiaBusId" ] [ "hardware" "nvidia" "prime" "nvidiaBusId" ])
(mkRenamedOptionModule [ "hardware" "nvidia" "optimus_prime" "intelBusId" ] [ "hardware" "nvidia" "prime" "intelBusId" ])
];
options = {
hardware.nvidia.powerManagement.enable = mkOption {
type = types.bool;
default = false;
description = ''
Experimental power management through systemd. For more information, see
the NVIDIA docs, on Chapter 21. Configuring Power Management Support.
'';
};
hardware.nvidia.modesetting.enable = mkOption {
type = types.bool;
default = false;
description = ''
Enable kernel modesetting when using the NVIDIA proprietary driver.
Enabling this fixes screen tearing when using Optimus via PRIME (see
<option>hardware.nvidia.prime.sync.enable</option>. This is not enabled
by default because it is not officially supported by NVIDIA and would not
work with SLI.
'';
};
hardware.nvidia.prime.nvidiaBusId = mkOption {
type = types.str;
default = "";
example = "PCI:1:0:0";
description = ''
Bus ID of the NVIDIA GPU. You can find it using lspci; for example if lspci
shows the NVIDIA GPU at "01:00.0", set this option to "PCI:1:0:0".
'';
};
hardware.nvidia.prime.intelBusId = mkOption {
type = types.str;
default = "";
example = "PCI:0:2:0";
description = ''
Bus ID of the Intel GPU. You can find it using lspci; for example if lspci
shows the Intel GPU at "00:02.0", set this option to "PCI:0:2:0".
'';
};
hardware.nvidia.prime.sync.enable = mkOption {
type = types.bool;
default = false;
description = ''
Enable NVIDIA Optimus support using the NVIDIA proprietary driver via PRIME.
If enabled, the NVIDIA GPU will be always on and used for all rendering,
while enabling output to displays attached only to the integrated Intel GPU
without a multiplexer.
Note that this option only has any effect if the "nvidia" driver is specified
in <option>services.xserver.videoDrivers</option>, and it should preferably
be the only driver there.
If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be
specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and
<option>hardware.nvidia.prime.intelBusId</option>).
If you enable this, you may want to also enable kernel modesetting for the
NVIDIA driver (<option>hardware.nvidia.modesetting.enable</option>) in order
to prevent tearing.
Note that this configuration will only be successful when a display manager
for which the <option>services.xserver.displayManager.setupCommands</option>
option is supported is used.
'';
};
hardware.nvidia.prime.sync.allowExternalGpu = mkOption {
type = types.bool;
default = false;
description = ''
Configure X to allow external NVIDIA GPUs when using optimus.
'';
};
hardware.nvidia.prime.offload.enable = mkOption {
type = types.bool;
default = false;
description = ''
Enable render offload support using the NVIDIA proprietary driver via PRIME.
If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be
specified (<option>hardware.nvidia.prime.nvidiaBusId</option> and
<option>hardware.nvidia.prime.intelBusId</option>).
'';
};
hardware.nvidia.nvidiaPersistenced = mkOption {
default = false;
type = types.bool;
description = ''
Update for NVIDA GPU headless mode, i.e. nvidia-persistenced. It ensures all
GPUs stay awake even during headless mode.
'';
};
};
config = mkIf enabled {
assertions = [
{
assertion = with config.services.xserver.displayManager; gdm.nvidiaWayland -> cfg.modesetting.enable;
message = "You cannot use wayland with GDM without modesetting enabled for NVIDIA drivers, set `hardware.nvidia.modesetting.enable = true`";
}
{
assertion = primeEnabled -> pCfg.nvidiaBusId != "" && pCfg.intelBusId != "";
message = ''
When NVIDIA PRIME is enabled, the GPU bus IDs must configured.
'';
}
{
assertion = offloadCfg.enable -> versionAtLeast nvidia_x11.version "435.21";
message = "NVIDIA PRIME render offload is currently only supported on versions >= 435.21.";
}
{
assertion = !(syncCfg.enable && offloadCfg.enable);
message = "Only one NVIDIA PRIME solution may be used at a time.";
}
];
# If Optimus/PRIME is enabled, we:
# - Specify the configured NVIDIA GPU bus ID in the Device section for the
# "nvidia" driver.
# - Add the AllowEmptyInitialConfiguration option to the Screen section for the
# "nvidia" driver, in order to allow the X server to start without any outputs.
# - Add a separate Device section for the Intel GPU, using the "modesetting"
# driver and with the configured BusID.
# - Reference that Device section from the ServerLayout section as an inactive
# device.
# - Configure the display manager to run specific `xrandr` commands which will
# configure/enable displays connected to the Intel GPU.
services.xserver.useGlamor = mkDefault offloadCfg.enable;
services.xserver.drivers = optional primeEnabled {
name = "modesetting";
display = offloadCfg.enable;
deviceSection = ''
BusID "${pCfg.intelBusId}"
${optionalString syncCfg.enable ''Option "AccelMethod" "none"''}
'';
} ++ singleton {
name = "nvidia";
modules = [ nvidia_x11.bin ];
display = !offloadCfg.enable;
deviceSection = optionalString primeEnabled
''
BusID "${pCfg.nvidiaBusId}"
${optionalString syncCfg.allowExternalGpu "Option \"AllowExternalGpus\""}
'';
screenSection =
''
Option "RandRRotation" "on"
${optionalString syncCfg.enable "Option \"AllowEmptyInitialConfiguration\""}
'';
};
services.xserver.serverLayoutSection = optionalString syncCfg.enable ''
Inactive "Device-modesetting[0]"
'' + optionalString offloadCfg.enable ''
Option "AllowNVIDIAGPUScreens"
'';
services.xserver.displayManager.setupCommands = optionalString syncCfg.enable ''
# Added by nvidia configuration module for Optimus/PRIME.
${pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource modesetting NVIDIA-0
${pkgs.xorg.xrandr}/bin/xrandr --auto
'';
environment.etc."nvidia/nvidia-application-profiles-rc" = mkIf nvidia_x11.useProfiles {
source = "${nvidia_x11.bin}/share/nvidia/nvidia-application-profiles-rc";
};
hardware.opengl.package = mkIf (!offloadCfg.enable) nvidia_x11.out;
hardware.opengl.package32 = mkIf (!offloadCfg.enable) nvidia_libs32;
hardware.opengl.extraPackages = optional offloadCfg.enable nvidia_x11.out;
hardware.opengl.extraPackages32 = optional offloadCfg.enable nvidia_libs32;
environment.systemPackages = [ nvidia_x11.bin nvidia_x11.settings ]
++ optionals nvidiaPersistencedEnabled [ nvidia_x11.persistenced ];
systemd.packages = optional cfg.powerManagement.enable nvidia_x11.out;
systemd.services = let
baseNvidiaService = state: {
description = "NVIDIA system ${state} actions";
path = with pkgs; [ kbd ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${nvidia_x11.out}/bin/nvidia-sleep.sh '${state}'";
};
};
nvidiaService = sleepState: (baseNvidiaService sleepState) // {
before = [ "systemd-${sleepState}.service" ];
requiredBy = [ "systemd-${sleepState}.service" ];
};
services = (builtins.listToAttrs (map (t: nameValuePair "nvidia-${t}" (nvidiaService t)) ["hibernate" "suspend"]))
// {
nvidia-resume = (baseNvidiaService "resume") // {
after = [ "systemd-suspend.service" "systemd-hibernate.service" ];
requiredBy = [ "systemd-suspend.service" "systemd-hibernate.service" ];
};
};
in optionalAttrs cfg.powerManagement.enable services
// optionalAttrs nvidiaPersistencedEnabled {
"nvidia-persistenced" = mkIf nvidiaPersistencedEnabled {
description = "NVIDIA Persistence Daemon";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "forking";
Restart = "always";
PIDFile = "/var/run/nvidia-persistenced/nvidia-persistenced.pid";
ExecStart = "${nvidia_x11.persistenced}/bin/nvidia-persistenced --verbose";
ExecStopPost = "${pkgs.coreutils}/bin/rm -rf /var/run/nvidia-persistenced";
};
};
};
systemd.tmpfiles.rules = optional config.virtualisation.docker.enableNvidia
"L+ /run/nvidia-docker/bin - - - - ${nvidia_x11.bin}/origBin"
++ optional (nvidia_x11.persistenced != null && config.virtualisation.docker.enableNvidia)
"L+ /run/nvidia-docker/extras/bin/nvidia-persistenced - - - - ${nvidia_x11.persistenced}/origBin/nvidia-persistenced";
boot.extraModulePackages = [ nvidia_x11.bin ];
# nvidia-uvm is required by CUDA applications.
boot.kernelModules = [ "nvidia-uvm" ] ++
optionals config.services.xserver.enable [ "nvidia" "nvidia_modeset" "nvidia_drm" ];
# If requested enable modesetting via kernel parameter.
boot.kernelParams = optional (offloadCfg.enable || cfg.modesetting.enable) "nvidia-drm.modeset=1"
++ optional cfg.powerManagement.enable "nvidia.NVreg_PreserveVideoMemoryAllocations=1";
# Create /dev/nvidia-uvm when the nvidia-uvm module is loaded.
services.udev.extraRules =
''
KERNEL=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidiactl c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 255'"
KERNEL=="nvidia_modeset", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-modeset c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 254'"
KERNEL=="card*", SUBSYSTEM=="drm", DRIVERS=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%n c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) %n'"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm-tools c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
'';
boot.blacklistedKernelModules = [ "nouveau" "nvidiafb" ];
services.acpid.enable = true;
};
}
