From 24c7043fa29f2fbd0cb068c44157752fe265282b Mon Sep 17 00:00:00 2001
From: Alexander Wainwright <code@figtree.dev>
Date: Tue, 16 Dec 2025 12:58:40 +1000
Subject: [PATCH] Add nvidia driver and set kernel version

---
 hosts/armitage/configuration.nix | 77 +++++++++++++++++++++++++++++++-
 1 file changed, 75 insertions(+), 2 deletions(-)

diff --git a/hosts/armitage/configuration.nix b/hosts/armitage/configuration.nix
index ce62a2e..ce2b4cc 100644
--- a/hosts/armitage/configuration.nix
+++ b/hosts/armitage/configuration.nix
@@ -18,10 +18,83 @@
   boot.loader.efi.canTouchEfiVariables = true;
 
   # Use latest kernel.
-  boot.kernelPackages = pkgs.linuxPackages_latest;
+  # boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.kernelPackages = pkgs.linuxPackages_6_12;
 
   networking.hostName = "armitage";
-  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+
+  hardware.graphics.enable = true;
+
+  # Load nvidia driver for Xorg and Wayland
+  services.xserver.videoDrivers = ["nvidia" "displaylink" "modesetting"];
+
+  boot = {
+    blacklistedKernelModules = [ "nouveau" ];
+  };
+
+  hardware.nvidia = {
+
+    # Modesetting is required.
+    modesetting.enable = true;
+
+    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
+    # Enable this if you have graphical corruption issues or application crashes after waking
+    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
+    # of just the bare essentials.
+    powerManagement.enable = false;
+
+    # Fine-grained power management. Turns off GPU when not in use.
+    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
+    powerManagement.finegrained = false;
+
+    # Use the NVidia open source kernel module (not to be confused with the
+    # independent third-party "nouveau" open source driver).
+    # Support is limited to the Turing and later architectures. Full list of
+    # supported GPUs is at:
+    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
+    # Only available from driver 515.43.04+
+    open = true;
+
+    # Enable the Nvidia settings menu,
+	# accessible via `nvidia-settings`.
+    nvidiaSettings = true;
+
+    # Optionally, you may need to select the appropriate driver version for your specific GPU.
+    # package = config.boot.kernelPackages.nvidiaPackages.stable;
+    package = config.boot.kernelPackages.nvidiaPackages.mkDriver {
+      version = "580.76.05";
+      sha256_64bit = "sha256-IZvmNrYJMbAhsujB4O/4hzY8cx+KlAyqh7zAVNBdl/0=";
+      sha256_aarch64 = "sha256-NL2DswzVWQQMVM092NmfImqKbTk9VRgLL8xf4QEvGAQ=";
+      openSha256 = "sha256-xEPJ9nskN1kISnSbfBigVaO6Mw03wyHebqQOQmUg/eQ=";
+      settingsSha256 = "sha256-ll7HD7dVPHKUyp5+zvLeNqAb6hCpxfwuSyi+SAXapoQ=";
+      persistencedSha256 = "sha256-bs3bUi8LgBu05uTzpn2ugcNYgR5rzWEPaTlgm0TIpHY=";
+    };
+
+    prime = {
+      sync.enable = true;
+
+      amdgpuBusId = "PCI:0:65:0";
+      nvidiaBusId = "PCI:0:64:0";
+    };
+  };
+
+  # packages
+  environment.systemPackages = with pkgs; [
+    displaylink
+    libreoffice
+  ];
+
+  # Already detected directories
+  programs = {
+    direnv = {
+      enable = true;
+      enableBashIntegration = true;
+      nix-direnv.enable = true;
+    };
+  };
+
+  # # display link drivers
+  # systemd.services.dlm.wantedBy = [ "multi-user.target" ];
 
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions