stride3d/stride · critical · Exception

Failed to initialize the audio native layer.

Error message

Failed to initialize the audio native layer.

What it means

Thrown from the static constructor of Stride.Audio.AudioEngine when the native audio layer (AudioLayer.Init) fails to initialize. The library throws it because no audio API (playback, capture, mixer) can work without the native backend being up. Since it fires in a static ctor, the first use of AudioEngine fails with a TypeInitializationException wrapping this message.

Solutions

1. Install/repair the platform audio backend (e.g. libpulse/alsa libs on Linux, audio drivers on Windows/macOS).
2. Verify a sound device is present and enabled; on servers, load a dummy audio driver (e.g. PulseAudio null sink or ALSA loopback).
3. Run the app on a machine/session with audio support enabled (e.g. enable audio redirection in RDP).
4. Catch TypeInitializationException and degrade gracefully (disable audio) when the app can run without sound.

Example fix

// before
var audio = AudioEngineFactory.GetAudioEngine();
// after
try { var audio = AudioEngineFactory.GetAudioEngine(); }
catch (TypeInitializationException ex) when (ex.InnerException?.Message.Contains("audio native layer") == true)
{
    logger.Warn("Audio unavailable, running without sound");
}

// Cannot probe AudioLayer directly; detect audio availability lazily.
bool audioAvailable = true;
try { Activator.CreateInstance(typeof(AudioEngine)); }
catch (TypeInitializationException) { audioAvailable = false; }

try
{
    var audio = AudioEngineFactory.GetAudioEngine();
}
catch (TypeInitializationException ex) when (ex.InnerException?.Message.Contains("audio native layer") == true)
{
    logger.Warn("Native audio unavailable; continuing without sound.");
    audio = null;
}

When it happens

Trigger: Any first construction/use of AudioEngine on a machine with no usable audio device, missing or incompatible native audio libraries (OpenAL/platform backend), or a corrupted audio driver stack.

Common situations: Headless CI servers or Docker containers with no sound hardware; remote desktop sessions without audio redirection; Linux systems missing ALSA/Pulse libraries; broken audio drivers after OS updates.

Related errors

• Failed to create Celt custom mode.
• Failed to create an instance of the celt encoder/decoder.
• Failed to initialize FreeType library
• Failed to initialize msdfgen context
• Failed to create Celt decoder.

AI-assisted analysis of stride3d/stride@96fad776d2 (2026-09-14). Data as JSON: /api/errors/312220d608c4cbd7. Report an issue: GitHub.

Appendix: source

Thrown at sources/engine/Stride.Audio/AudioEngine.cs:29

{
    /// <summary>
    /// Represents the audio engine. 
    /// In current version, the audio engine necessarily creates its context on the default audio hardware of the device.
    /// The audio engine is required when creating or loading sounds.
    /// </summary>
    /// <remarks>The AudioEngine is Disposable. Call the <see cref="DisposeBase.Dispose"/> function when you do not need to play sounds anymore to free memory allocated to the audio system.
    /// A call to Dispose automatically stops and disposes all the <see cref="SoundBase"/>, <see cref="SoundInstance"/>.</remarks>
    public class AudioEngine : ComponentBase
    {
        public AudioListener DefaultListener;

        private readonly AudioDevice audioDevice;

        static AudioEngine()
        {
            if (!AudioLayer.Init())
            {
                throw new Exception("Failed to initialize the audio native layer.");
            }
        }

        /// <summary>
        /// The logger of the audio engine.
        /// </summary>
        public static readonly Logger Logger = GlobalLogger.GetLogger("AudioEngine");

        /// <summary>
        /// Initializes a new instance of the <see cref="AudioEngine"/> class with the default audio device.
        /// </summary>
        /// <param name="sampleRate">The desired sample rate of the audio graph. 0 let the engine choose the best value depending on the hardware.</param>
        /// <exception cref="AudioInitializationException">Initialization of the audio engine failed. May be due to memory problems or missing audio hardware.</exception>
        public AudioEngine(uint sampleRate = 0)
            : this(new AudioDevice(), sampleRate)
        {
        }

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