44 lines
		
	
	
		
			1016 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			44 lines
		
	
	
		
			1016 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { config, pkgs, lib, ... }:
 | |
| 
 | |
| let kernel = config.boot.kernelPackages; in
 | |
| 
 | |
| {
 | |
| 
 | |
|   ###### interface
 | |
| 
 | |
|   options = {
 | |
| 
 | |
|     hardware.nvidiaOptimus.disable = lib.mkOption {
 | |
|       default = false;
 | |
|       type = lib.types.bool;
 | |
|       description = ''
 | |
|         Completely disable the NVIDIA graphics card and use the
 | |
|         integrated graphics processor instead.
 | |
|       '';
 | |
|     };
 | |
| 
 | |
|   };
 | |
| 
 | |
| 
 | |
|   ###### implementation
 | |
| 
 | |
|   config = lib.mkIf config.hardware.nvidiaOptimus.disable {
 | |
|     boot.blacklistedKernelModules = ["nouveau" "nvidia" "nvidiafb"];
 | |
|     boot.kernelModules = [ "bbswitch" ];
 | |
|     boot.extraModulePackages = [ kernel.bbswitch ];
 | |
| 
 | |
|     systemd.services.bbswitch = {
 | |
|       description = "Disable NVIDIA Card";
 | |
|       wantedBy = [ "multi-user.target" ];
 | |
|       serviceConfig = {
 | |
|         Type = "oneshot";
 | |
|         RemainAfterExit = true;
 | |
|         ExecStart = "${kernel.bbswitch}/bin/discrete_vga_poweroff";
 | |
|         ExecStop = "${kernel.bbswitch}/bin/discrete_vga_poweron";
 | |
|       };
 | |
|       path = [ kernel.bbswitch ];
 | |
|     };
 | |
|   };
 | |
| 
 | |
| }
 | 
