Intel Graphics: Difference between revisions

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Example configuration with Hardware Acceleration & Quick Sync Video enabled on a modern Intel Graphics (Including ARC)

services.xserver.videoDrivers = [ "modesetting" ];

hardware.graphics = {

enable = true;

extraPackages = with pkgs; [

# Required for modern Intel GPUs (Xe iGPU and ARC)

intel-media-driver # VA-API (iHD) userspace

vpl-gpu-rt # oneVPL (QSV) runtime

# Optional (compute / tooling):

intel-compute-runtime # OpenCL (NEO) + Level Zero for Arc/Xe

# NOTE: 'intel-ocl' also exists as a legacy package; not recommended for Arc/Xe.

# libvdpau-va-gl # Only if you must run VDPAU-only apps

];

};

environment.sessionVariables = {

LIBVA_DRIVER_NAME = "iHD"; # Prefer the modern iHD backend

# VDPAU_DRIVER = "va_gl"; # Only if using libvdpau-va-gl

};

# May help if FFmpeg/VAAPI/QSV init fails (esp. on Arc with i915):

hardware.enableRedistributableFirmware = true;

boot.kernelParams = [ "i915.enable_guc=3" ];

# May help services that have trouble accessing /dev/dri (e.g., jellyfin/plex):

# users.users.<service>.extraGroups = [ "video" "render" ];

</syntaxhighlight>

== Driver ==

Refer to the [https://nixos.org/manual/nixos/stable/#sec-x11--graphics-cards-intel Intel Graphics drivers] section of the NixOS manual.

== Video acceleration ==

To enable hardware (GPU) accelerated video decoding and encoding you need to add additional entries in <code>hardware.~~opengl~~.extraPackages</code> (see [[Accelerated_Video_Playback|"accelerated video playback"]]).

To enable hardware (GPU) accelerated video decoding and encoding you need to add additional entries in <code>hardware.graphics.extraPackages</code> (see [[Accelerated_Video_Playback|accelerated video playback]]).

== Quick Sync Video ==

Intel Quick Sync Video (QSV) is a hardware accelerated media conversion framework for Intel GPUs.

Applications that can be accelerated using QSV include OBS Studio and ffmpeg.

QSV support can be used through either [https://github.com/Intel-Media-SDK/MediaSDK Intel Media SDK] or [https://github.com/intel/libvpl Intel VPL]. Intel VPL supersedes the now deprecated Media SDK.

Both libraries dispatch to a backing implementation that is different depending on the GPU generation at runtime. You need to add either <code>intel-media-sdk</code> or <code>vpl-gpu-rt</code> (previously <code>onevpl-intel-gpu</code>) to <code>hardware.graphics.extraPackages</code>. You can check the [https://github.com/intel/libvpl?tab=readme-ov-file#dispatcher-behavior-when-targeting-intel-gpus this] table to decide whether you need the Media SDK or VPL GPU runtime.

Sample configuration:

hardware.graphics = {

enable = true;

extraPackages = with pkgs; [

... # your Open GL, Vulkan and VAAPI drivers

vpl-gpu-rt # or intel-media-sdk for QSV

];

};

</syntaxHighlight>

== 12th Gen (Alder Lake) ==

X Server may fail to start with the newer 12th generation, Alder Lake, iRISxe integrated graphics chips. If this is the case, you can give the kernel a hint as to what driver to use. First confirm the graphic chip's device ID by running in a terminal:

The X Server may fail to start with the newer 12th generation, Alder Lake, iRISxe integrated graphics chips. If this is the case, you can give the kernel a hint as to what driver to use. First confirm the graphic chip's device ID by running in a terminal:

Line 16:

Line 70:

<pre>boot.kernelParams = [ "i915.force_probe=<device ID>" ];</pre>

[[Category:~~Hardware~~]]

[[Category:Video]]

@@ Line 1: / Line 1: @@
+Example configuration with Hardware Acceleration & Quick Sync Video enabled on a modern Intel Graphics (Including ARC)
+<syntaxhighlight lang="nix">
+  services.xserver.videoDrivers = [ "modesetting" ];
+  hardware.graphics = {
+    enable = true;
+    extraPackages = with pkgs; [
+      # Required for modern Intel GPUs (Xe iGPU and ARC)
+      intel-media-driver     # VA-API (iHD) userspace
+      vpl-gpu-rt             # oneVPL (QSV) runtime
+      # Optional (compute / tooling):
+      intel-compute-runtime  # OpenCL (NEO) + Level Zero for Arc/Xe
+      # NOTE: 'intel-ocl' also exists as a legacy package; not recommended for Arc/Xe.
+      # libvdpau-va-gl       # Only if you must run VDPAU-only apps
+    ];
+  };
+  environment.sessionVariables = {
+    LIBVA_DRIVER_NAME = "iHD";     # Prefer the modern iHD backend
+    # VDPAU_DRIVER = "va_gl";      # Only if using libvdpau-va-gl
+  };
+  # May help if FFmpeg/VAAPI/QSV init fails (esp. on Arc with i915):
+  hardware.enableRedistributableFirmware = true;
+  boot.kernelParams = [ "i915.enable_guc=3" ];
+  # May help services that have trouble accessing /dev/dri (e.g., jellyfin/plex):
+  # users.users.<service>.extraGroups = [ "video" "render" ];
+</syntaxhighlight>
+== Driver ==
+Refer to the [https://nixos.org/manual/nixos/stable/#sec-x11--graphics-cards-intel Intel Graphics drivers] section of the NixOS manual.
 == Video acceleration ==
-To enable hardware (GPU) accelerated video decoding and encoding you need to add additional entries in <code>hardware.opengl.extraPackages</code> (see [[Accelerated_Video_Playback|"accelerated video playback"]]).
+To enable hardware (GPU) accelerated video decoding and encoding you need to add additional entries in <code>hardware.graphics.extraPackages</code> (see [[Accelerated_Video_Playback|accelerated video playback]]).
+== Quick Sync Video ==
+Intel Quick Sync Video (QSV) is a hardware accelerated media conversion framework for Intel GPUs.
+Applications that can be accelerated using QSV include OBS Studio and ffmpeg.
+QSV support can be used through either [https://github.com/Intel-Media-SDK/MediaSDK Intel Media SDK] or [https://github.com/intel/libvpl Intel VPL]. Intel VPL supersedes the now deprecated Media SDK.
+Both libraries dispatch to a backing implementation that is different depending on the GPU generation at runtime. You need to add either <code>intel-media-sdk</code> or <code>vpl-gpu-rt</code> (previously <code>onevpl-intel-gpu</code>) to <code>hardware.graphics.extraPackages</code>. You can check the [https://github.com/intel/libvpl?tab=readme-ov-file#dispatcher-behavior-when-targeting-intel-gpus this] table to decide whether you need the Media SDK or VPL GPU runtime.
+Sample configuration:
+<syntaxHighlight lang=nix>
+  hardware.graphics = {
+    enable = true;
+    extraPackages = with pkgs; [
+      ... # your Open GL, Vulkan and VAAPI drivers
+      vpl-gpu-rt # or intel-media-sdk for QSV
+    ];
+  };
+</syntaxHighlight>
 == 12th Gen (Alder Lake) ==
-X Server may fail to start with the newer 12th generation, Alder Lake, iRISxe integrated graphics chips. If this is the case, you can give the kernel a hint as to what driver to use. First confirm the graphic chip's device ID by running in a terminal:
+The X Server may fail to start with the newer 12th generation, Alder Lake, iRISxe integrated graphics chips. If this is the case, you can give the kernel a hint as to what driver to use. First confirm the graphic chip's device ID by running in a terminal:
 <syntaxHighlight lang=console>
@@ Line 16: / Line 70: @@
 <pre>boot.kernelParams = [ "i915.force_probe=<device ID>" ];</pre>
-[[Category:Hardware]]
+[[Category:Video]]