Because the new driver doesn't support the WaveRT port, the system can't access the driver. Therefore, the operating system assumes that the new driver also supports the WaveRT port.
When the device-specific driver replaces the default driver, the device interface that is created by usbaudio2.sys is still used because the reference strings overlap. However, both drivers use the "wave" reference string when the device interface is registered. This "audio not playing" problem occurs because the default USB audio 2.0 driver (usbaudio2.sys) uses the WaveRT port for operation but the device-specific driver doesn't. Both the Windows Audio and the Windows Audio End Point Builder services must be running for audio to work correctly. When you select the icon, you receive the following message:Īudio services not responding. The speaker icon on the task bar is marked with an X mark. In this scenario, the device can't be used, and the computer doesn't have sound.
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