N150 QuickSync Support

Help
1

I have an N150 mini-pc that I am attempting to use as a Jellyfin server. Everything seems to be working fine other than the HW acceleration.

My config:

  environment.systemPackages = with pkgs; [
    intel-gpu-tools
    jellyfin
    jellyfin-ffmpeg
    jellyfin-web
    logrotate
  ];

  ...

  systemd.services.jellyfin.environment.LIBVA_DRIVER_NAME = "iHD";
  environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; };

  # Intel Hardware Acceleration config
  hardware = {
    enableAllFirmware = true;
    intel-gpu-tools.enable = true;
    graphics = {
      enable = true;
      extraPackages = with pkgs; [
        intel-media-driver
        vaapiVdpau
        intel-compute-runtime # OpenCL filter support (hardware tonemapping and subtitle burn-in)
        intel-ocl
        vpl-gpu-rt # QSV on 11th gen or newer
      ];
    };
  };

My user is also a member of “video” and “render” groups.

nix-shell -p pciutils --run "lspci -nn | grep VGA" shows:
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-N [Intel Graphics] [8086:46d4]

nix-shell -p intel-gpu-tools --run intel_gpu_top shows:
No device filter specified and no discrete/integrated i915 devices found

The device doesn’t appear at all: ls: cannot access '/dev/dri': No such file or directory

I’ve seen similar posts online: n355 CPU, n100 CPU and of course the wiki.

Did I miss something obvious?

2

I found another guide online (somewhat different HW) and made some changes:

  systemd.services.jellyfin.environment.LIBVA_DRIVER_NAME = "iHD"; # Or "i965" if using older driver
  environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; };      # Same here
  
  #boot.kernelParams = [ "i915.force_probe=46d4" ];
  #boot.kernelModules = [ "i915" ];
  #boot.initrd.kernelModules = [ "i915" ];
  boot.kernelParams = [
    "i915.fastboot=1"
    "i915.enable_guc=3"
  ];

  # Intel Hardware Acceleration config
  hardware = {
    #enableAllFirmware = true;
    firmware = [ pkgs.linux-firmware ];
    intel-gpu-tools.enable = true;
    graphics = {
      enable = true;
      extraPackages = with pkgs; [
        # VA-API drivers
        intel-media-driver  # LIBVA_DRIVER_NAME=iHD
        intel-vaapi-driver
        libvdpau-va-gl

        # OpenCL and compute support
        intel-compute-runtime
        intel-gmmlib
        onevpl-intel-gpu

        # VA-API utilities and libraries
        libva
        libva-utils

        # Diagnostic tools
        glxinfo
        pciutils

        #vpl-gpu-rt # QSV on 11th gen or newer
      ];
    };
  };

It still doesn’t work, really not sure what else to try. dmesg not showing anything useful.