diff --git a/flake.lock b/flake.lock
index a2fce2c..f5544a5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -207,11 +207,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1746341346,
-        "narHash": "sha256-WjupK5Xpc+viJlJWiyPHp/dF4aJItp1BPuFsEdv2/fI=",
+        "lastModified": 1745955289,
+        "narHash": "sha256-mmV2oPhQN+YF2wmnJzXX8tqgYmUYXUj3uUUBSTmYN5o=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "0833dc8bbc4ffa9cf9b0cbfccf1c5ec8632fc66e",
+        "rev": "72081c9fbbef63765ae82bff9727ea79cc86bd5b",
         "type": "github"
       },
       "original": {
@@ -222,11 +222,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746183838,
-        "narHash": "sha256-kwaaguGkAqTZ1oK0yXeQ3ayYjs8u/W7eEfrFpFfIDFA=",
+        "lastModified": 1746055187,
+        "narHash": "sha256-3dqArYSMP9hM7Qpy5YWhnSjiqniSaT2uc5h2Po7tmg0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bf3287dac860542719fe7554e21e686108716879",
+        "rev": "3e362ce63e16b9572d8c2297c04f7c19ab6725a5",
         "type": "github"
       },
       "original": {
@@ -276,11 +276,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1746232882,
-        "narHash": "sha256-MHmBH2rS8KkRRdoU/feC/dKbdlMkcNkB5mwkuipVHeQ=",
+        "lastModified": 1745930157,
+        "narHash": "sha256-y3h3NLnzRSiUkYpnfvnS669zWZLoqqI6NprtLQ+5dck=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7a2622e2c0dbad5c4493cb268aba12896e28b008",
+        "rev": "46e634be05ce9dc6d4db8e664515ba10b78151ae",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 5148d6e..86f3827 100644
--- a/flake.nix
+++ b/flake.nix
@@ -85,7 +85,6 @@
                 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 b608601..4977464 100644
--- a/machines/core/modules.nix
+++ b/machines/core/modules.nix
@@ -13,6 +13,7 @@ _: {
     ];
 
     kernelModules = [
+      "dm-snapshot"
       "e1000e"
       "nvme"
     ];
diff --git a/machines/newton/hardware-configuration.nix b/machines/newton/hardware-configuration.nix
index 45a3738..3c97088 100644
--- a/machines/newton/hardware-configuration.nix
+++ b/machines/newton/hardware-configuration.nix
@@ -14,6 +14,7 @@
     "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 af5463d..df207e2 100644
--- a/machines/thinkman/hardware-configuration.nix
+++ b/machines/thinkman/hardware-configuration.nix
@@ -17,15 +17,14 @@ in
   my.hardware = {
     bluetooth.enable = true;
     debug.enable = true;
-    drive-monitor.enable = true;
+    drive-monitor = {
+      enable = true;
+    };
     firmware = {
       enable = true;
       inherit cpuFlavor;
     };
-    graphics = {
-      enable = true;
-      inherit cpuFlavor;
-    };
+    graphics.cpuFlavor = 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 400df22..a093a19 100644
--- a/modules/hardware/graphics/default.nix
+++ b/modules/hardware/graphics/default.nix
@@ -9,46 +9,29 @@ let
 in
 {
   options.my.hardware.graphics = with lib; {
-    enable = mkEnableOption "graphics configuration";
     cpuFlavor = mkOption {
-      type =
-        with types;
-        nullOr (enum [
-          "amd"
-          "intel"
-        ]);
+      type = with types; nullOr (enum [ "intel" ]);
       default = null;
       example = "intel";
       description = "Which kind of GPU";
     };
   };
 
-  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; [
+  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; [
           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
-        ];
-      })
-    ]
-  );
+      };
+    })
+  ];
 }