add NVIDIA initrd

Author: ahoneybun

system76/galp5-1650/default.nix

@@ -6,6 +6,8 @@
     ../../common/gpu/nvidia/ampere
   ];
 
+  boot.initrd.kernelModules = [ "nvidia" ];
+
   hardware.nvidia = {
 
     # modesetting.enable = lib.mkDefault true;