feat: nvidia prime mode

home/user/environment.nix

@@ -12,7 +12,7 @@
     QT_WAYLAND_DISABLE_WINDOWDECORATION = "1";
     QT_AUTO_SCREEN_SCALE_FACTOR = "1";
     GTK_CSD = "0";
-    WLR_DRM_DEVICES = "/dev/dri/card0";
+    WLR_DRM_DEVICES = "/dev/dri/card1";
     WLR_NO_HARDWARE_CURSORS = "1";
     CLUTTER_BACKEND = "wayland";
     WLR_RENDERER = "vulkan";
@@ -29,8 +29,5 @@
     ELECTRON_OZONE_PLATFORM_HINT = "auto";
     GDK_BACKEND = "wayland";
 
-    # GPU
-    LIBVA_DRIVER_NAME = "nvidia";
-    __GLX_VENDOR_LIBRARY_NAME = "nvidia";
   };
 }

system/dev/dn-lap/default.nix

@@ -19,6 +19,7 @@ in
     ./boot.nix
     ../../modules
     ../../modules/wireguard.nix
+    ../../modules/dn-ca.nix
   ];
 
   # Overrides

system/dev/dn-pre7780/boot.nix

@@ -1,25 +1,27 @@
 { ... }:
 
 {
-  boot.loader.systemd-boot.enable = true;
+
-  boot.kernelParams = [
+  fileSystems."/mnt/storage" = {
-    "nvidia-drm.fbdev=1"
+    device = "router.dn:/mnt/storage";
-    "nvidia.NVreg_PreserveVideoMemoryAllocations=1"
+    fsType = "nfs";
+    options = [
+      "x-systemd.automount"
+      "noauto"
+      "x-systemd.idle-timeout=600"
     ];
+  };
+
+  boot.loader.systemd-boot.enable = true;
 
   # Enable F keys in some wireless keyboard (Ex. neo65)
   boot.extraModprobeConfig = ''
     options hid_apple fnmode=2
-    options nvidia_drm modeset=1 dbdev=1
   '';
 
   boot.initrd.systemd.enable = true;
   boot.initrd.kernelModules = [
-    "nvidia"
     "i915"
-    "nvidia_modeset"
-    "nvidia_uvm"
-    "nvidia_drm"
   ];
   boot.swraid.enable = true;
   boot.swraid.mdadmConf = "\n  MAILADDR smitty\n  ARRAY /dev/md126 metadata=1.2 name=stuff:0\n  UUID=3b0b7c51-2681-407e-a22a-e965a8aeece7\n  ";

system/dev/dn-pre7780/default.nix

@@ -11,6 +11,10 @@
 let
   hyprcursor-size = "32";
   xcursor-size = "24";
+  nvidia-mode = "rsync";
+  # Get bus id with `lshw`
+  intel-bus-id = "PCI:0:2:0";
+  nvidia-bus-id = "PCI:1:0:0";
 in
 {
   imports = [
@@ -18,9 +22,14 @@ in
     ./hardware-configuration.nix
     ./boot.nix
     ../../modules
-    ../../modules/nvidia.nix
+    (import ../../modules/nvidia.nix {
+      nvidia-mode = nvidia-mode;
+      intel-bus-id = intel-bus-id;
+      nvidia-bus-id = nvidia-bus-id;
+    })
     ../../modules/gaming.nix
     ../../modules/wireguard.nix
+    ../../modules/dn-ca.nix
   ];
 
   # Overrides

system/modules/default.nix

@@ -18,7 +18,6 @@
     ./time.nix
     ./theme.nix
     ./users.nix
-    ./dn-ca.nix
     ./environment.nix
     ./virtualization.nix
     ./display-manager.nix

system/modules/environment.nix

@@ -1,18 +1,6 @@
 { pkgs, ... }:
 
-# Nvidia only
-let
-  offload = pkgs.writeShellScriptBin "offload" ''
-    #!/bin/bash
-    export __NV_PRIME_RENDER_OFFLOAD=1
-    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
-    export __GLX_VENDOR_LIBRARY_NAME=nvidia
-    export __VK_LAYER_NV_optimus=NVIDIA_only
-    exec "$@"
-  '';
-in
 {
-  environment.systemPackages = [ offload ];
   environment.variables = {
     ELECTRON_OZONE_PLATFORM_HINT = "auto";
     GSETTINGS_SCHEMA_DIR = "${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}/glib-2.0/schemas";

system/modules/hardware.nix

@@ -1,12 +1,17 @@
-{ config, pkgs, nixpkgs, inputs, system, ... }:
+{
+  config,
+  pkgs,
+  inputs,
+  system,
+  ...
+}:
 
 let
   pkgs-unstable = inputs.hyprland.inputs.nixpkgs.legacyPackages.${system};
 in
 {
   nixpkgs.config.packageOverrides = pkgs: {
-    intel-vaapi-driver =
+    intel-vaapi-driver = pkgs.intel-vaapi-driver.override { enableHybridCodec = true; };
-      pkgs.intel-vaapi-driver.override { enableHybridCodec = true; };
   };
 
   hardware = {
@@ -30,8 +35,7 @@ in
       enable32Bit = true;
       package32 = pkgs-unstable.pkgsi686Linux.mesa.drivers;
       package = pkgs-unstable.mesa.drivers;
-      extraPackages = with pkgs;
+      extraPackages = with pkgs; [
-        [
         intel-media-driver # LIBVA_DRIVER_NAME=iHD
         vaapiVdpau
         (vaapiIntel.override {

system/modules/nvidia.nix

@@ -1,7 +1,58 @@
-{ config, ... }:
-
 {
+  nvidia-mode ? "sync",
+  nvidia-bus-id,
+  intel-bus-id,
+  ...
+}:
+let
+  validModes = [
+    "offload"
+    "sync"
+    "rsync"
+  ];
+in
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+# Nvidia offload mode
+let
+  validString = lib.concatStringsSep ", " validModes;
+
+  offload = pkgs.writeShellScriptBin "offload" ''
+    #!/bin/bash
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    exec "$@"
+  '';
+in
+lib.checkListOfEnum "Nvidia Prime Mode" validModes [ nvidia-mode ] {
+  environment.systemPackages = [ offload ];
+
+  # Enable nvidia on wayland or xserver
   services.xserver.videoDrivers = [ "nvidia" ];
+
+  boot.extraModprobeConfig = ''
+    options nvidia_drm modeset=1 dbdev=1
+  '';
+
+  boot.initrd.kernelModules = [
+    "nvidia"
+    "nvidia_modeset"
+    "nvidia_uvm"
+    "nvidia_drm"
+  ];
+
+  boot.kernelParams = [
+    "nvidia-drm.fbdev=1"
+    "nvidia.NVreg_PreserveVideoMemoryAllocations=1"
+  ];
+
   hardware = {
     nvidia.open = false;
     nvidia.modesetting.enable = true;
@@ -11,16 +62,49 @@
 
     nvidia.nvidiaSettings = true;
     nvidia.dynamicBoost.enable = true;
-    nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+    nvidia.package = config.boot.kernelPackages.nvidiaPackages.beta;
 
-    nvidia.prime = {
+    nvidia.prime =
+      (
+        # Reverse Sync Mode
+        if nvidia-mode == "rsync" then
+          {
+            reverseSync.enable = true;
+            allowExternalGpu = false;
+          }
+        # Offload mode
+        else if nvidia-mode == "offload" then
+          {
             offload = {
               enable = true;
               enableOffloadCmd = true;
             };
-      # This may different between devices
+          }
-      intelBusId = "PCI:0:2:0";
+        # Sync Mode
-      nvidiaBusId = "PCI:1:0:0";
+        else
+          {
+            sync.enable = true;
+          }
+      )
+      // {
+        intelBusId = intel-bus-id;
+        nvidiaBusId = nvidia-bus-id;
       };
+
+    graphics = {
+      enable = true;
+      enable32Bit = true;
+      extraPackages = with pkgs; [
+        nvidia-vaapi-driver
+      ];
+    };
+  };
+
+  environment.variables = {
+    # GPU
+    LIBVA_DRIVER_NAME = "nvidia";
+    __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+    NVD_BACKEND = "direct";
+    MOZ_DISABLE_RDD_SANDBOX = 1;
   };
 }

system/modules/users.nix

@@ -9,7 +9,6 @@
       "input"
       "networkmanager"
       "docker"
-      "libvirtd"
       "kvm"
     ];
   };