furthre config on laptop

system/gpu/nvidia/disable.nix

@@ -0,0 +1,31 @@
+{ ... }:
+
+{
+  # This runs only intel/amdgpu igpus and nvidia dgpus do not drain power.
+
+  ##### disable nvidia, very nice battery life.
+  boot.extraModprobeConfig = ''
+    blacklist nouveau
+    options nouveau modeset=0
+  '';
+
+  services.udev.extraRules = ''
+    # Remove NVIDIA USB xHCI Host Controller devices, if present
+    ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c0330", ATTR{power/control}="auto", ATTR{remove}="1"
+
+    # Remove NVIDIA USB Type-C UCSI devices, if present
+    ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c8000", ATTR{power/control}="auto", ATTR{remove}="1"
+
+    # Remove NVIDIA Audio devices, if present
+    ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x040300", ATTR{power/control}="auto", ATTR{remove}="1"
+
+    # Remove NVIDIA VGA/3D controller devices
+    ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x03[0-9]*", ATTR{power/control}="auto", ATTR{remove}="1"
+  '';
+  boot.blacklistedKernelModules = [
+    "nouveau"
+    "nvidia"
+    "nvidia_drm"
+    "nvidia_modeset"
+  ];
+}