Microsoft KB Archive/311152

= Cannot Run DirectX Diagnostic Tool Sound Test on a Computer with a VIA AC'97 Audio Controller (WDM) =

Article ID: 311152

Article Last Modified on 5/29/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q311152



SYMPTOMS
When you run the Microsoft DirectX Diagnostic tool (Dxdiag.exe) sound test on a computer that has a VIA AC'97 Audio Controller (Windows Driver Model), the test may not run properly, and you may receive the following informational message:

Your Sound Card does not support hardware buffering. Sound will only playback from software buffers.



CAUSE
The VIA AC'97 Audio Controller driver does not support a 22050 audio sampling rate, which is required for the Dxdiag.exe sound test.



STATUS
This behavior is by design.

Additional query words: card wdm

Keywords: kbprb KB311152

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