Updates audio and kernel configs; Fixes Bluetooth

- Adds full PulseAudio package configuration
- Refines Bluetooth settings, enabling power-on boot and adding extra tools/configs
- Switches to zen kernel and adjusts CPU microcode update option

hosts/common/optional/audio.nix

@@ -4,6 +4,9 @@
     inputs.nix-gaming.nixosModules.pipewireLowLatency
   ];
 
+  hardware.pulseaudio = {
+    package = pkgs.pulseaudioFull;
+  };
   services.pulseaudio.enable = false;
   security.rtkit.enable = true;
   services.pipewire = {

hosts/common/optional/bluetooth.nix

@@ -1,22 +1,41 @@
-{ pkgs, ... }:
+{ pkgs, config, ... }:
 {
   hardware.bluetooth = {
     enable = true;
-    package = pkgs.bluez5-experimental;
+    package = pkgs.bluez-experimental;
+    powerOnBoot = true;
     settings = {
+      LE = {
+        MinConnectionInterval = 16;
+        MaxConnectionInterval = 16;
+        ConnectionLatency = 10;
+        ConnectionSupervisionTimeout = 100;
+      };
+      Policy = {
+        AutoEnable = "true";
+      };
       # make Xbox Series X controller work
       General = {
-        Class = "0x000100";
-        ControllerMode = "bredr";
+        Enable = "Source,Sink,Media,Socket";
         FastConnectable = true;
         JustWorksRepairing = "always";
-        Privacy = "device";
         # Battery info for Bluetooth devices
         Experimental = true;
       };
     };
   };
 
-  # https://github.com/NixOS/nixpkgs/issues/114222
-  systemd.user.services.telephony_client.enable = false;
+  services.blueman.enable = true;
+  # these 2 options below were not mentioned in wiki
+
+  boot = {
+    extraModprobeConfig = ''
+      options bluetooth enable_ecred=1
+    '';
+  };
+
+  environment.systemPackages = with pkgs; [
+    bluez-tools
+    bluetuith # can transfer files via OBEX
+  ];
 }

hosts/nixos/rune/hardware.nix

@@ -25,8 +25,8 @@
       timeout = 3;
     };
 
-    # use latest kernel
-    kernelPackages = pkgs.linuxPackages_latest;
+    # Use the zen kernel for better performance
+    kernelPackages = pkgs.linuxPackages_zen;
 
     initrd = {
       systemd.enable = true;
@@ -99,6 +99,6 @@
   # networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableAllFirmware;
 
 }