nixos-config/system/laptop.nix

{
  services.tlp = {
    enable = true;
    settings = {
      # Audio
      SOUND_POWER_SAVE_ON_AC = 0;
      # File systems
      MAX_LOST_WORK_SECS_ON_AC = 10;
      MAX_LOST_WORK_SECS_ON_BAT = 30;
      # Radio devices
      DEVICES_TO_DISABLE_ON_STARTUP = "bluetooth wwan";
      WIFI_PWR_ON_BAT = "off";
      # USB
      USB_EXCLUDE_AUDIO = 0;
      USB_EXCLUDE_PHONE = 1;
    };
  };
}