MediaTek MT7927 / MT6639 (Filogic 380) NixOS Support

This NixOS flake provides out-of-tree kernel modules and firmware for the MediaTek MT7927 / MT6639 (Filogic 380) Wi-Fi 7 and Bluetooth combo card.

Features

• Patched Bluetooth: Includes the btusb and btmtk patches required to initialize the MT6639 Bluetooth stack on Linux.
• ASPM Fix: Automatically applies a udev rule to disable PCIe Active State Power Management (ASPM) for this device, which fixes common "stuck upload" and packet loss issues.
• Auto-Firmware Extraction: Automatically downloads the latest official ASUS Windows drivers and extracts the necessary .bin firmware files using Python scripts.
• Automated Updates: A GitHub Action keeps the driver patches and kernel source hashes in sync with the latest stable kernel releases.

Usage

1. Add to your flake.nix

Add this repository to your inputs:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    mt7927.url = "github:cmspam/mt7927-nixos";
  };

  outputs = { self, nixpkgs, mt7927, ... }: {
    nixosConfigurations.your-hostname = nixpkgs.lib.nixosSystem {
      specialArgs = { inherit mt7927; };
      modules = [
        # ... your other modules
        mt7927.nixosModules.default
      ];
    };
  };
}

2. Enable the hardware in configuration.nix

Activate the module and its features:

{
  hardware.mediatek-mt7927 = {
    enable = true;
    enableWifi = true;
    enableBluetooth = true;
    # Highly recommended to fix upload speed issues
    disableAspm = true;
  };
}

Troubleshooting

Verify Module Loading

After applying the configuration and rebooting, you can verify the drivers are loaded:

Bluetooth Check:

modinfo btusb | grep filename
# Result should point to a path in /nix/store/

WiFi Check:

lsmod | grep mt7925

Credits

• Patches and firmware extraction logic based on jetm/mediatek-mt7927-dkms.