feat: Enable proper suspend support for Dell laptops

boot.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ ... }:
 
 {
   
@@ -15,13 +15,7 @@
     # Enable "Silent boot"
     consoleLogLevel = 3;
     initrd.verbose = false;
-    kernelParams = [
-      "quiet"
-      "splash"
-      "boot.shell_on_fail"
-      "udev.log_priority=3"
-      "rd.systemd.show_status=auto"
-    ];
+
     # Hide the OS choice for bootloaders.
     # It's still possible to open the bootloader list by pressing any key
     # It will just not appear on screen unless a key is pressed
@@ -46,5 +40,10 @@
     LC_TIME = "en_US.UTF-8";
   };
 
+  systemd.sleep.extraConfig = ''
+    SuspendState=freeze
+    HibernateDelaySec=2h
+  '';
+
   system.stateVersion = "25.11"; # Did you read the comment?
 }