Fix on sleep with Nvidia cards and add new wallpaper

modules/system/nixos/apps/gnome/apps.nix

@@ -22,10 +22,12 @@ in
           papers
           celluloid
           resources
+          gnome-system-monitor
         ]
         ++ [
           # Gnome files explorer
           nautilus
+          refine
         ];
     };
 

modules/system/nixos/graphics/nvidia.nix

@@ -1,4 +1,8 @@
-{ lib, config, ... }:
+{
+  lib,
+  config,
+  ...
+}:
 with lib;
 let
   cfg = config.os.graphics.nvidia;
@@ -9,16 +13,28 @@ in
   };
   config = mkIf cfg.enable {
 
+    hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+
     services.xserver.enable = true;
-    services.xserver.videoDrivers = [ "nvidia" ];
+    services.xserver.videoDrivers = [
+      "modesetting"
+      "nvidia"
+    ];
 
     hardware.graphics.enable = true;
+
     hardware.nvidia = {
       open = true;
       nvidiaSettings = false;
       modesetting.enable = true; # Wayland requirements
       powerManagement.enable = true;
+      prime = {
+        intelBusId = "PCI:0@0:2:0";
+        nvidiaBusId = "PCI:1@0:0:0";
+      };
     };
 
+    os.graphics.nvidia.systemd.enable = true;
+
   };
 }

modules/system/nixos/graphics/systemd.nix

@@ -0,0 +1,55 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+with lib;
+let
+  cfg = config.os.graphics.nvidia.systemd;
+in
+{
+  options.os.graphics.nvidia.systemd = {
+    enable = mkEnableOption "System nvidia service";
+  };
+  config = mkIf cfg.enable {
+
+    systemd = {
+      services.systemd-suspend.environment.SYSTEMD_SLEEP_FREEZE_USER_SESSIONS = "false"; # Uncertain if this is still required or not.
+      services."gnome-suspend" = {
+        description = "suspend gnome shell";
+        before = [
+          "systemd-suspend.service"
+          "systemd-hibernate.service"
+          "nvidia-suspend.service"
+          "nvidia-hibernate.service"
+        ];
+        wantedBy = [
+          "systemd-suspend.service"
+          "systemd-hibernate.service"
+        ];
+        serviceConfig = {
+          Type = "oneshot";
+          ExecStart = "${pkgs.procps}/bin/pkill -f -STOP ${pkgs.gnome-shell}/bin/gnome-shell";
+        };
+      };
+      services."gnome-resume" = {
+        description = "resume gnome shell";
+        after = [
+          "systemd-suspend.service"
+          "systemd-hibernate.service"
+          "nvidia-resume.service"
+        ];
+        wantedBy = [
+          "systemd-suspend.service"
+          "systemd-hibernate.service"
+        ];
+        serviceConfig = {
+          Type = "oneshot";
+          ExecStart = "${pkgs.procps}/bin/pkill -f -CONT ${pkgs.gnome-shell}/bin/gnome-shell";
+        };
+      };
+    };
+
+  };
+}