ASUS ROG Ally X (allyx)

systems/x86_64-linux/allyx/

Hardware

Device: ASUS ROG Ally X handheld gaming PC
CPU/GPU: AMD (LACT, CoolerControl)
Disk: NVMe with LUKS encryption
Security: Lanzaboote (Secure Boot)

Key Features

Jovian NixOS for Steam Deck-compatible experience
Steam auto-starts into Game Mode on boot
Decky Loader for Steam Deck plugins
Handheld Daemon for power/TDP/fan control
GNOME available as a desktop session (selectable from Steam)
SDDM (Wayland) as display manager — GDM disabled
Gaming enabled (Gamemode, Gamescope, etc.)
AMD GPU management via LACT
CoolerControl for fan curves
iwd as the Wi-Fi backend
Impermanence (ephemeral root)

Jovian NixOS

The allyx uses Jovian NixOS to provide Steam Deck compatibility:

jovian.steam = {
  enable        = true;
  autoStart     = true;
  desktopSession = "gnome";  # fall-through desktop session
};

jovian.decky-loader = {
  enable         = true;
  extraPackages  = [ pkgs.python3 pkgs.systemd ];
};

Network

Hostname: allyx
Wi-Fi backend: iwd (via NetworkManager)

Configuration Files

File	Purpose
`default.nix`	Main config — Jovian, gaming, hardware
`boot.nix`	Lanzaboote, kernel

Secrets

Secrets are in secrets/allyx-secrets.yaml, encrypted for: matt, desktop, deck, steamdeck, admin, jallen-nas, matt_allyx, allyx.

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