diff --git a/flake.lock b/flake.lock
index f5544a5..a2fce2c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -207,11 +207,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1745955289,
-        "narHash": "sha256-mmV2oPhQN+YF2wmnJzXX8tqgYmUYXUj3uUUBSTmYN5o=",
+        "lastModified": 1746341346,
+        "narHash": "sha256-WjupK5Xpc+viJlJWiyPHp/dF4aJItp1BPuFsEdv2/fI=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "72081c9fbbef63765ae82bff9727ea79cc86bd5b",
+        "rev": "0833dc8bbc4ffa9cf9b0cbfccf1c5ec8632fc66e",
         "type": "github"
       },
       "original": {
@@ -222,11 +222,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746055187,
-        "narHash": "sha256-3dqArYSMP9hM7Qpy5YWhnSjiqniSaT2uc5h2Po7tmg0=",
+        "lastModified": 1746183838,
+        "narHash": "sha256-kwaaguGkAqTZ1oK0yXeQ3ayYjs8u/W7eEfrFpFfIDFA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3e362ce63e16b9572d8c2297c04f7c19ab6725a5",
+        "rev": "bf3287dac860542719fe7554e21e686108716879",
         "type": "github"
       },
       "original": {
@@ -276,11 +276,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1745930157,
-        "narHash": "sha256-y3h3NLnzRSiUkYpnfvnS669zWZLoqqI6NprtLQ+5dck=",
+        "lastModified": 1746232882,
+        "narHash": "sha256-MHmBH2rS8KkRRdoU/feC/dKbdlMkcNkB5mwkuipVHeQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "46e634be05ce9dc6d4db8e664515ba10b78151ae",
+        "rev": "7a2622e2c0dbad5c4493cb268aba12896e28b008",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 86f3827..5148d6e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -85,6 +85,7 @@
                 enable = true;
                 settings.noLambdaPatternNames = true;
               };
+              flake-checker.enable = true;
               markdownlint.enable = true;
               nixfmt-rfc-style.enable = true;
               shellcheck.enable = true;
diff --git a/machines/core/modules.nix b/machines/core/modules.nix
index 4977464..b608601 100644
--- a/machines/core/modules.nix
+++ b/machines/core/modules.nix
@@ -13,7 +13,6 @@ _: {
     ];
 
     kernelModules = [
-      "dm-snapshot"
       "e1000e"
       "nvme"
     ];
diff --git a/machines/newton/hardware-configuration.nix b/machines/newton/hardware-configuration.nix
index 3c97088..45a3738 100644
--- a/machines/newton/hardware-configuration.nix
+++ b/machines/newton/hardware-configuration.nix
@@ -14,7 +14,6 @@
     "virtio_pci"
     "virtio_scsi"
   ];
-  boot.initrd.kernelModules = [ "dm-snapshot" ];
 
   hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
 }
diff --git a/machines/thinkman/hardware-configuration.nix b/machines/thinkman/hardware-configuration.nix
index df207e2..af5463d 100644
--- a/machines/thinkman/hardware-configuration.nix
+++ b/machines/thinkman/hardware-configuration.nix
@@ -17,14 +17,15 @@ in
   my.hardware = {
     bluetooth.enable = true;
     debug.enable = true;
-    drive-monitor = {
-      enable = true;
-    };
+    drive-monitor.enable = true;
     firmware = {
       enable = true;
       inherit cpuFlavor;
     };
-    graphics.cpuFlavor = cpuFlavor;
+    graphics = {
+      enable = true;
+      inherit cpuFlavor;
+    };
     id-card.enable = true;
     keychron.enable = true;
     monitor.enable = true;
diff --git a/modules/hardware/graphics/default.nix b/modules/hardware/graphics/default.nix
index a093a19..400df22 100644
--- a/modules/hardware/graphics/default.nix
+++ b/modules/hardware/graphics/default.nix
@@ -9,29 +9,46 @@ let
 in
 {
   options.my.hardware.graphics = with lib; {
+    enable = mkEnableOption "graphics configuration";
     cpuFlavor = mkOption {
-      type = with types; nullOr (enum [ "intel" ]);
+      type =
+        with types;
+        nullOr (enum [
+          "amd"
+          "intel"
+        ]);
       default = null;
       example = "intel";
       description = "Which kind of GPU";
     };
   };
 
-  config = lib.mkMerge [
-    # Intel GPU
-    (lib.mkIf (cfg.cpuFlavor == "intel") {
-      nixpkgs.config.packageOverrides = pkgs: {
-        vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
-      };
-      hardware.graphics = {
-        enable = true;
-        extraPackages = with pkgs; [
+  config = lib.mkIf cfg.enable (
+    lib.mkMerge [
+      {
+        hardware.graphics.enable = true;
+      }
+      # Intel GPU
+      (lib.mkIf (cfg.cpuFlavor == "intel") {
+        nixpkgs.config.packageOverrides = pkgs: {
+          vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
+        };
+        hardware.graphics.extraPackages = with pkgs; [
           intel-media-driver # LIBVA_DRIVER_NAME=iHD
           vaapiIntel # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
           vaapiVdpau
           libvdpau-va-gl
         ];
-      };
-    })
-  ];
+      })
+
+      (lib.mkIf (cfg.cpuFlavor == "amd") {
+        hardware.graphics.extraPackages = with pkgs; [
+          amdvlk
+        ];
+        hardware.graphics.extraPackages32 = with pkgs; [
+          driversi686Linux.amdvlk
+        ];
+      })
+    ]
+  );
 }