{ ... }: {
  # T2: align with https://github.com/deqrocks/apple-bce#required-kernel-parameters (suspend stack).
  # (Older t2linux guidance used s2idle + pcie_ports=compat; deqrocks fork expects deep + auto + pm_async=off.)
  boot.kernelParams = [
    "mem_sleep_default=deep"
    "intel_iommu=on"
    "iommu=pt"
    "pcie_ports=auto"
    "pm_async=off"
    # https://wiki.t2linux.org/guides/hybrid-graphics/#enabling-the-igpu — helps some post-suspend black screens.
    "i915.enable_guc=3"
  ];

  # Hybrid T2 Macs: prefer Intel for display/GL (saves power; avoids broken AMDGPU after resume).
  # https://wiki.t2linux.org/guides/hybrid-graphics/
  boot.extraModprobeConfig = ''
    options apple-gmux force_igd=y
  '';

  # If the AMD dGPU misbehaves after S3 (Electron apps won’t start, suspend breaks), keep it unloaded.
  # See https://github.com/deqrocks/apple-bce#notes-for-dgpu-models — drop this list if you need DRI_PRIME
  # or external displays wired through the dGPU.
  boot.blacklistedKernelModules = [ "amdgpu" ];

  boot.kernelModules = [ "apple-bce" ];
  boot.initrd.availableKernelModules = [ "apple-bce" ];
}