Nvidia Drivers Not loading

brnix · March 6, 2024, 7:34pm

Hi everyone,

I have been trying to get my Nvidia card working, using offloading (as it seemed the simplest option).

I have the 4070 (laptop version).

I have pulled and put together all the configs from the Nvidia modules in the hardware repo and the items from the wiki. At the moment, I am not consuming the code from the hardware repo (my laptop model is not supported yet), and wanted all my Nvidia config in a single spot until I get this working.

Essentially, nvidia-smi nor nvidia-settings see the card. I searched this site, and the other fixes do not seem to apply.

Config:

{ lib, pkgs, config, ... }:

{
  # NVIDIA drivers are unfree.
  nixpkgs.config.allowUnfree = pkgs.lib.mkForce true;
  # Sets the default video driver for the X server and Wayland to "nvidia"
  services.xserver.videoDrivers = lib.mkDefault [ "nvidia" ];
  hardware = {
    opengl = {
      # Enables the graphics driver for OpenGL
      enable = true;
      # Enables Direct Rendering Infrastructure (DRI), which allows the graphics driver to directly render graphics, improving performance in OpenGL
      driSupport = true;
      # Enables 32-bit Direct Rendering Infrastructure (DRI) support, which allows the graphics driver to directly render graphics in 32-bit applications using OpenGL
      driSupport32Bit = true;
      # Adds the 'vaapiVdpau' package to the extra packages for OpenGL
      extraPackages = with pkgs; [ vaapiVdpau ];
    };
    nvidia = {
      # Modesetting is required.
      # Since NVIDIA does not support automatic KMS late loading, enabling DRM (Direct Rendering Manager) kernel mode setting is required to make Wayland compositors function properly, or to allow for Xorg#Rootless_Xorg.
      modesetting.enable = true;
      # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
      # Enable this if you have graphical corruption issues or application crashes after waking
      # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
      # of just the bare essentials.
      powerManagement.enable = false;
      # Fine-grained power management. Turns off GPU when not in use.
      # Experimental and only works on modern Nvidia GPUs (Turing or newer).
      powerManagement.finegrained = false;
      # Use the NVidia open source kernel module (not to be confused with the
      # independent third-party "nouveau" open source driver).
      # Support is limited to the Turing and later architectures. Full list of
      # supported GPUs is at:
      # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
      # Only available from driver 515.43.04+
      # Currently alpha-quality/buggy, so false is currently the recommended setting.
      ## Confirmed my card is in there.
      open = true;
      # Enable the Nvidia settings menu,
      # accessible via `nvidia-settings`.
      nvidiaSettings = true;
      # Optionally, you may need to select the appropriate driver version for your specific GPU.
      package = config.boot.kernelPackages.nvidiaPackages.stable;
      prime = {
        offload = {
          enable = true;
          enableOffloadCmd = true; # Provides `nvidia-offload` command.
        };
        # Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
        intelBusId = "PCI:0:2:0";
        # Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
        nvidiaBusId = "PCI:1:0:0";
      };
    };
  };

}

#### NOTES
# Get BusID:
# lspci | rg "VGA|3D controller"
# it will be in hexadecimal format, convert it to decimal
# https://www.binaryhexconverter.com/hex-to-decimal-converter

Errors:

❯ nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

Kiskae · March 6, 2024, 7:46pm

Depending on the revision of the gpu it might not be supported by the driver on the stable branch, since that has been frozen since november 2023.

I recommend trying a newer driver using the custom driver by copying a driver from the nixos-unstable branch: https://github.com/NixOS/nixpkgs/issues/289292#issuecomment-1948782958

In addition you should take a look at your kernel logs for errors from the nvidia kernel module: journalctl -k -b --grep "nvidia"

brnix · March 6, 2024, 11:57pm

Just for reference.

  1   │ Mar 06 13:41:45 evo kernel: Command line: initrd=\EFI\nixos\kb22xxyjki0hfa4xryhjw3iqwm1i5nx9-initrd-li
       │ nux-6.6.19-initrd.efi init=/nix/store/hja927fgi6r29dci1sl26a6mgyk273nw-nixos-system-evo-24.05.20240303
       │ .b8697e5/init loglevel=4 nvidia-drm.modeset=1 nvidia.NVreg_OpenRmEnableUnsupportedGpus=1
   2   │ Mar 06 13:41:45 evo kernel: Kernel command line: initrd=\EFI\nixos\kb22xxyjki0hfa4xryhjw3iqwm1i5nx9-in
       │ itrd-linux-6.6.19-initrd.efi init=/nix/store/hja927fgi6r29dci1sl26a6mgyk273nw-nixos-system-evo-24.05.2
       │ 0240303.b8697e5/init loglevel=4 nvidia-drm.modeset=1 nvidia.NVreg_OpenRmEnableUnsupportedGpus=1

I will check out the other link you posted and see if that helps.

brnix · March 7, 2024, 1:42am

OK, I was going down the road of the article, then I noticed it is for the “super”. Which I do not believe this 4070 is. (Since it is a laptop GPU).

I also noticed this time around that the wiki highlights:

Note: As of early March 2024 the production driver has been updated from 535 to 550. This is a breaking change for some people, especially those on Wayland. To resolve this follow the steps under Running the new RTX SUPER on nixos stable.

So I moved over to package = config.boot.kernelPackages.nvidiaPackages.production; but unfortunately it did not help.

So, after the change, I checked journalctl again:

Mar 06 17:38:22 evo kernel: Command line: initrd=\EFI\nixos\ycyfh7ddcajd7gav8rz8gnl7mdwzgf84-initrd-linux-6.6.19-initrd.efi init=/nix/store/payip885f0jd2lmzfavpq419ihcs17y9-nixos-system-evo-24.05.20240303.b8697e5/init loglevel=4 nvidia-drm.modeset=1
Mar 06 17:38:22 evo kernel: Kernel command line: initrd=\EFI\nixos\ycyfh7ddcajd7gav8rz8gnl7mdwzgf84-initrd-linux-6.6.19-initrd.efi init=/nix/store/payip885f0jd2lmzfavpq419ihcs17y9-nixos-system-evo-24.05.20240303.b8697e5/init loglevel=4 nvidia-drm.modeset=1

brnix · March 7, 2024, 3:02am

OK, Through trial and error, I think I had the wrong busid.

❯ lspci -s 0:0:2
00:02.0 VGA compatible controller: Intel Corporation Raptor Lake-P [Iris Xe Graphics] (rev 04)
❯ lspci -s 0:1:0
01:00.0 3D controller: NVIDIA Corporation AD106M [GeForce RTX 4070 Max-Q / Mobile] (rev a1)

I updated to the above, but I am still having the same issue.

le sigh

Side Question - What is the best way to get the busid in the proper needed decimal format on Wayland?

brnix · April 22, 2024, 11:49pm

Just adding my most recent version of my config. Still having the same issues though.

Original can be seen here.
Code for easy reference below:

{ pkgs, config, libs, inputs, ... }:
let
  username = if builtins.getEnv "SUDO_USER" != "" then
    builtins.getEnv "SUDO_USER"
  else
    builtins.getEnv "USER";
in {

  # Enable OpenGL
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
    # https://github.com/NixOS/nixos-hardware/blob/5d48925b815fd202781bfae8fb6f45c07112fdb2/common/gpu/nvidia/default.nix
    extraPackages = with pkgs; [ vaapiVdpau ];
  };

  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = [ "nvidia" ];

  hardware.nvidia = {

    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    powerManagement.enable = false;
    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    powerManagement.finegrained = false;

    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of
    # supported GPUs is at:
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
    # Only available from diver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommened setting.
    open = false;

    # Enable the Nvidia settings menu,
    # accessible via `nvidia-settings`.
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    # package = config.boot.kernelPackages.nvidiaPackages.production;
    # Can select driver here:
    # https://github.com/NixOS/nixpkgs/blob/979a311fbd179b86200e412a3ed266b64808df4e/pkgs/os-specific/linux/nvidia-x11/default.nix#L36
    package = let
      rcu_patch = pkgs.fetchpatch {
        url =
          "https://github.com/gentoo/gentoo/raw/c64caf53/x11-drivers/nvidia-drivers/files/nvidia-drivers-470.223.02-gpl-pfn_valid.patch";
        hash = "sha256-eZiQQp2S/asE7MfGvfe6dA/kdCvek9SYa/FFGp24dVg=";
      };
    in config.boot.kernelPackages.nvidiaPackages.mkDriver {
      # version = "535.154.05";
      # sha256_64bit = "sha256-fpUGXKprgt6SYRDxSCemGXLrEsIA6GOinp+0eGbqqJg=";
      # sha256_aarch64 = "sha256-G0/GiObf/BZMkzzET8HQjdIcvCSqB1uhsinro2HLK9k=";
      # openSha256 = "sha256-wvRdHguGLxS0mR06P5Qi++pDJBCF8pJ8hr4T8O6TJIo=";
      # settingsSha256 = "sha256-9wqoDEWY4I7weWW05F4igj1Gj9wjHsREFMztfEmqm10=";
      # persistencedSha256 =
      #   "sha256-d0Q3Lk80JqkS1B54Mahu2yY/WocOqFFbZVBh+ToGhaE=";

      version = "550.40.07";
      sha256_64bit = "sha256-KYk2xye37v7ZW7h+uNJM/u8fNf7KyGTZjiaU03dJpK0=";
      sha256_aarch64 = "sha256-AV7KgRXYaQGBFl7zuRcfnTGr8rS5n13nGUIe3mJTXb4=";
      openSha256 = "sha256-mRUTEWVsbjq+psVe+kAT6MjyZuLkG2yRDxCMvDJRL1I=";
      settingsSha256 = "sha256-c30AQa4g4a1EHmaEu1yc05oqY01y+IusbBuq+P6rMCs=";
      persistencedSha256 =
        "sha256-11tLSY8uUIl4X/roNnxf5yS2PQvHvoNjnd2CB67e870=";

      patches = [ rcu_patch ];
    };

    prime = {

      # offload = {
      #     enable = true;
      #     enableOffloadCmd = true;
      # };

      # OR

      sync.enable = true;

      # Make sure to use the correct Bus ID values for your system!
      # https://wiki.nixos.org/wiki/Nvidia#Configuring_Optimus_PRIME:_Bus_ID_Values_(Mandatory)
      # Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA. ANd can match with: sudo lshw -c display
      # Note the two values under "bus info" above, which may differ from laptop to laptop. Our Nvidia Bus ID is 0e:00.0 and our Intel Bus ID is 00:02.0. Watch out for the formatting; convert them from hexadecimal to decimal, remove the padding (leading zeroes), replace the dot with a colon
      intelBusId = "PCI:0:2:0";
      nvidiaBusId = "PCI:1:0:0";
    };

  };

  home-manager.users."${username}" = {

    home.packages = with pkgs; [
      # Nvidia settings
      gnomeExtensions.gpu-profile-selector
      inputs.envycontrol.packages.x86_64-linux.default
    ];

    dconf.settings = with inputs.home-manager.lib.hm.gvariant; {
      # Gnome Extention - GPU Profile Selector
      "org/gnome/shell/extensions/GPU_profile_selector" = {
        rtd3 = true;
        force-composition-pipeline = true;
        coolbits = true;
        force-topbar-view = false;
      };
    };
  };
}

Current journalctl:

Apr 22 16:45:33 evo kernel: Command line: initrd=\EFI\nixos\nxndanw4cqi4k8y7sjdr67rfxsca620a-initrd-linux-6.6.28-initrd.efi init=/nix/store/aw0275438d3src1b5jb77xvyzprq51v8-nixos-system-evo-24.05.20240421.6143fc5/init loglevel=4 nvidia-drm.modeset=1
Apr 22 16:45:33 evo kernel: Kernel command line: initrd=\EFI\nixos\nxndanw4cqi4k8y7sjdr67rfxsca620a-initrd-linux-6.6.28-initrd.efi init=/nix/store/aw0275438d3src1b5jb77xvyzprq51v8-nixos-system-evo-24.05.20240421.6143fc5/init loglevel=4 nvidia-drm.modeset=1

brnix · May 17, 2024, 1:03am

Still fighting this.

Just apending some new info.

❯ nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

❯ lsmod | grep nvidia

❯ sudo modprobe nvidia
modprobe: ERROR: could not find module by name='off'
modprobe: ERROR: could not insert 'off': Unknown symbol in module, or unknown parameter (see dmesg)

so that then lead me to:

❯ bat /etc/modprobe.d/blacklist-nvidia.conf
───────┬─────────────────────────────────────────────
       │ File: /etc/modprobe.d/blacklist-nvidia.conf
───────┼─────────────────────────────────────────────
   1   │ # Automatically generated by EnvyControl
   2   │
   3   │ blacklist nouveau
   4   │ blacklist nvidia
   5   │ blacklist nvidia_drm
   6   │ blacklist nvidia_uvm
   7   │ blacklist nvidia_modeset
   8   │ blacklist nvidia_current
   9   │ blacklist nvidia_current_drm
  10   │ blacklist nvidia_current_uvm
  11   │ blacklist nvidia_current_modeset
  12   │ alias nouveau off
  13   │ alias nvidia off
  14   │ alias nvidia_drm off
  15   │ alias nvidia_uvm off
  16   │ alias nvidia_modeset off
  17   │ alias nvidia_current off
  18   │ alias nvidia_current_drm off
  19   │ alias nvidia_current_uvm off
  20   │ alias nvidia_current_modeset off

My current nvidia config looks like:

{ pkgs, config, lib, inputs, ... }: {
  imports = [
    inputs.nixos-hardware.nixosModules.common-gpu-nvidia

    # TODO: why do I get the below error?
    # error: The option `hardware.intelgpu.loadInInitrd' in `/nix/store/4mgg9mrh8g0qj4g3z9zvqhrniig10bsn-source/systems/evo/hardware/gpus.nix' is already declared in `/nix/store/75hvhrfigcnckibdlg877157bpwjmy85-source/common/gpu/intel'.
    # Where is the other coming from?g
    # inputs.nixos-hardware.nixosModules.common-gpu-intel
  ];

  boot = {
    blacklistedKernelModules = lib.mkDefault [ "nouveau" ];
    kernelModules = [ "kvm-intel" "nvidia" ];
  };

  hardware = {
    opengl = {
      enable = true;
      driSupport = true;
      driSupport32Bit = true;
      extraPackages = [ pkgs.intel-media-driver ];
    };

    nvidia = {
      # Modesetting is required.
      modesetting.enable = true;

      # Optionally, you may need to select the appropriate driver version for your specific GPU.
      package = config.boot.kernelPackages.nvidiaPackages.production;

      # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
      # Enable this if you have graphical corruption issues or application crashes after waking
      # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
      # of just the bare essentials.
      powerManagement.enable = false;

      # Fine-grained power management. Turns off GPU when not in use.
      # Experimental and only works on modern Nvidia GPUs (Turing or newer).
      powerManagement.finegrained = false;

      # Use the NVidia open source kernel module (not to be confused with the
      # independent third-party "nouveau" open source driver).
      # Support is limited to the Turing and later architectures. Full list of
      # supported GPUs is at:
      # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
      # Only available from driver 515.43.04+
      # Currently alpha-quality/buggy, so false is currently the recommended setting.
      open = false;

      prime = {
        intelBusId = "PCI:0:2:0";
        nvidiaBusId = "PCI:1:0:0";
        # Make the Intel iGP default. The NVIDIA Quadro is for CUDA/NVENC
        reverseSync.enable = true;
        # sync.enable = true;
      };
      nvidiaSettings = true;
    };
  };

  services.xserver.videoDrivers = [ "nvidia" ];

}

Did I do something wrong in there that would cause my issues?

Thank you.

Unfilled7320 · June 13, 2024, 7:12am

Hey, I also have a similar issue on a System76 Gaze18 (core i9 + RTX 3050) with plasma6.
I have access to nvidia-offload and nvidia-settings and nvidia-smi, but but the settings and smi complain that there’s no driver even when run with nvidia-offload.

Here is my nvidia.nix

{ config, lib, pkgs, ... }:
{
  #boot.initrd.kernelModules = [ "nvidia" ];
  #boot.extraModulePackages = [ config.boot.kernelPackages.nvidia_x11 ];
  boot.kernelParams = [
    "ibt=off"
  ];

  # Enable OpenGL
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };

  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = ["nvidia"];

  hardware.nvidia = {

    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    # Enable this if you have graphical corruption issues or application crashes after waking
    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead 
    # of just the bare essentials.
    #powerManagement.enable = false;

    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    #powerManagement.finegrained = false;

    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of 
    # supported GPUs is at: 
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
    # Only available from driver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommended setting.
    #open = false;

    # Enable the Nvidia settings menu,
	# accessible via `nvidia-settings`.
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
    prime = {
      intelBusId = "PCI:0:2:0";
      nvidiaBusId = "PCI:1:0:0";
      offload = {
        enable = true;
        enableOffloadCmd = true;
      };
    };
  };
}

Unfilled7320 · June 13, 2024, 9:42am

After a couple hours I got this:

─λ nvidia-offload nvidia-smi
Thu Jun 13 11:41:21 2024       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 550.78                 Driver Version: 550.78         CUDA Version: 12.4     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce RTX 3050 ...    Off |   00000000:01:00.0 Off |                  N/A |
| N/A   46C    P0             12W /   70W |       1MiB /   4096MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+
                                                                                         
+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI        PID   Type   Process name                              GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+

─λ cat nvidia.nix 
{ config, lib, pkgs, ... }:
{
  boot.initrd.kernelModules = [ "nvidia" ];
  boot.extraModulePackages = [ config.boot.kernelPackages.nvidia_x11 ];
  boot.kernelParams = [
    "ibt=off"
  ];

  # Enable OpenGL
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };

  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = ["nvidia"];

  hardware.nvidia = {

    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    # Enable this if you have graphical corruption issues or application crashes after waking
    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead 
    # of just the bare essentials.
    #powerManagement.enable = false;

    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    #powerManagement.finegrained = false;

    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of 
    # supported GPUs is at: 
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
    # Only available from driver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommended setting.
    #open = false;

    # Enable the Nvidia settings menu,
	# accessible via `nvidia-settings`.
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
    prime = {
      intelBusId = "PCI:0:2:0";
      nvidiaBusId = "PCI:1:0:0";
      offload = {
        enable = true;
        enableOffloadCmd = true;
      };
    };
  };
}

brnix · August 7, 2024, 11:57pm

OMG, almost 5 months later, I solved it!

The key thing here that fixed it all was initrd.kernelModules = [ "nvidia" "i915" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];

I do not know if I should be happy it is fixed, or sad it took, this long.

Working (for me) Config

{ pkgs, config, lib, inputs, ... }: {
  imports = [
    inputs.nixos-hardware.nixosModules.common-gpu-nvidia

    # TODO: why do I get the below error?
    # error: The option `hardware.intelgpu.loadInInitrd' in `/nix/store/4mgg9mrh8g0qj4g3z9zvqhrniig10bsn-source/systems/evo/hardware/gpus.nix' is already declared in `/nix/store/75hvhrfigcnckibdlg877157bpwjmy85-source/common/gpu/intel'.
    # Where is the other coming from?g
    # inputs.nixos-hardware.nixosModules.common-gpu-intel
  ];

  boot = {
    # TODO: confirm this works
    # https://forums.developer.nvidia.com/t/550-54-14-cannot-create-sg-table-for-nvkmskapimemory-spammed-when-launching-chrome-on-wayland/284775/26
    initrd.kernelModules = [ "nvidia" "i915" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];
    # extraModulePackages = [ config.boot.kernelPackages.nvidia_x11 ];
    kernelParams = [ "nvidia-drm.fbdev=1" ];
  };

  hardware = {
    # deprecated for graphics.enable
    # opengl = {
    #   enable = true;
    #   # extraPackages = [ pkgs.intel-media-driver pkgs.vaapiVdpau ];
    # };

    graphics = {
      # For 32 bit applications
      # enable32Bit = true;
      enable = true;
    };

    nvidia = {
      # Modesetting is required.
      modesetting.enable = true;

      # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
      # Enable this if you have graphical corruption issues or application crashes after waking
      # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
      # of just the bare essentials.
      powerManagement.enable = true;

      # Fine-grained power management. Turns off GPU when not in use.
      # Experimental and only works on modern Nvidia GPUs (Turing or newer).
      powerManagement.finegrained = false;

      # Use the NVidia open source kernel module (not to be confused with the
      # independent third-party "nouveau" open source driver).
      # Support is limited to the Turing and later architectures. Full list of
      # supported GPUs is at:
      # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
      # Only available from driver 515.43.04+
      # Currently alpha-quality/buggy, so false is currently the recommended setting.
      open = false;

      forceFullCompositionPipeline = true;

      prime = {
        intelBusId = "PCI:0:2:0";
        nvidiaBusId = "PCI:1:0:0";
        offload = {
          enable = true;
          enableOffloadCmd = true;
        };
        # Make the Intel iGP default. The NVIDIA Quadro is for CUDA/NVENC
        # reverseSync.enable = true;
        # sync.enable = true;
      };
      nvidiaSettings = true;

      # Optionally, you may need to select the appropriate driver version for your specific GPU.
      package = config.boot.kernelPackages.nvidiaPackages.beta;
    };
  };

  services.xserver.videoDrivers = [ "nvidia" ];

}

eljamm · August 8, 2024, 11:10am

Do you not have services.xserver.enable = true;? If it’s enabled, most of these are added to kernelModules, according to the Nvidia module.

Also, I don’t think you need to add nvidia-uvm (see this note):

Don’t add nvidia-uvm to kernelModules, because we want
nvidia-uvm be loaded only after udev rules for nvidia kernel
module are applied.

brnix · August 8, 2024, 4:50pm

Re: xserver:

I do!

    services.xserver = {
      enable = true;
      # Enable the GNOME Desktop Environment.
      displayManager.gdm.enable = true;
      desktopManager.gnome.enable = true;

      # Configure keymap in X11
      xkb = {
        layout = "us";
        variant = "";
      };
    };

Re: nvidia-uvm:

I added it because I found this post on the nvidia forums.

I will remove that and test!

Thank you!