Cannot Run DirectX Diagnostic Tool Sound Test on a Computer with a VIA AC'97 Audio Controller (WDM) (311152)


The information in this article applies to:

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
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.
Modification Type:MajorLast Reviewed:10/26/2001
Keywords:kbprb KB311152
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