An Audio Streaming Input and Output (ASIO) driver may not work correctly on a Windows Vista-based computer

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Article ID: 945444 - View products that this article applies to.
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SYMPTOMS

On a Windows Vista-based computer, an Audio Streaming Input and Output (ASIO) driver may not work correctly. When this problem occurs, you experience the following symptoms.

Symptom 1

When the ASIO driver calls the GetLinkPositionRegister routine that is provided in the Microsoft high-definition audio device driver interface (DDI), the GetLinkPositionRegister routine always returns 0 for the current direct memory access (DMA) position. In this situation, the ASIO driver may be unable to initialize. This symptom occurs only when certain hardware audio chipsets are installed. For example, this symptom occurs on a computer that has the ATI SB460 Southbridge chipset installed.

Symptom 2

An application can use the AUDCLNT_STREAMFLAGS_EVENTCALLBACK flag to open an exclusive-mode audio stream in pull mode. In this situation, the audio engine should signal an event that is provided by the application to indicate that the audio buffer is ready for processing. However, the audio engine does not correctly signal the event on a Windows Vista-based computer.

RESOLUTION

Service Pack Information

This problem is corrected in Windows Vista Service Pack 1. To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista, 32-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb945444~31bf3856ad364e35~x86~~6.0.3.0.mumNot Applicable1,79414-Jan-200800:06Not Applicable
Package_2_for_kb945444~31bf3856ad364e35~x86~~6.0.3.0.mumNot Applicable2,04014-Jan-200800:06Not Applicable
X86_9d1b7031998528dbc786d24bf4902950_31bf3856ad364e35_6.0.6000.20751_none_35b03f03213c2729.manifestNot Applicable70314-Jan-200800:06Not Applicable
X86_hdaudbus.inf_31bf3856ad364e35_6.0.6000.20751_none_758fe1b4a2a5d4ce.manifestNot Applicable1,88114-Jan-200800:06Not Applicable
X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.0.6000.20751_none_750e12fa00be73bf.manifestNot Applicable130,24712-Jan-200804:44Not Applicable
Hdaudbus.sys6.0.6000.1638653,76012-Jan-200800:42x86
Audiocore.mofNot Applicable4,35213-Dec-200719:46Not Applicable
Audiodg.exe6.0.6000.2075188,06412-Jan-200802:25x86
Audioeng.dll6.0.6000.20751398,84812-Jan-200804:20x86
Audiokse.dll6.0.6000.20751273,92012-Jan-200804:20x86
Audioses.dll6.0.6000.20751115,71212-Jan-200804:20x86
Audiosrv.dll6.0.6000.20751310,78412-Jan-200804:20x86
Encdump.dll5.0.1.1169,98412-Jan-200804:20x86
Windows Vista, 64-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_220a4c02cbe0ed93fe2651c08d1bdc07_31bf3856ad364e35_6.0.6000.20751_none_0aaba387faa17f8c.manifestNot Applicable1,05614-Jan-200800:06Not Applicable
Amd64_hdaudbus.inf_31bf3856ad364e35_6.0.6000.20751_none_d1ae7d385b034604.manifestNot Applicable1,88314-Jan-200800:09Not Applicable
Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.0.6000.20751_none_d12cae7db91be4f5.manifestNot Applicable130,28912-Jan-200804:56Not Applicable
Package_1_for_kb945444~31bf3856ad364e35~amd64~~6.0.3.0.mumNot Applicable2,02714-Jan-200800:06Not Applicable
Package_2_for_kb945444~31bf3856ad364e35~amd64~~6.0.3.0.mumNot Applicable2,05214-Jan-200800:06Not Applicable
Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.0.6000.20751_none_db8158cfed7ca6f0.manifestNot Applicable121,80612-Jan-200804:37Not Applicable
Hdaudbus.sys6.0.6000.1638650,68811-Jan-200823:16x64
Audiocore.mofNot Applicable4,35214-Dec-200721:27Not Applicable
Audiodg.exe6.0.6000.20751111,10412-Jan-200802:42x64
Audioeng.dll6.0.6000.20751480,76812-Jan-200804:30x64
Audiokse.dll6.0.6000.20751311,80812-Jan-200804:30x64
Audioses.dll6.0.6000.20751193,02412-Jan-200804:30x64
Audiosrv.dll6.0.6000.20751445,95212-Jan-200804:30x64
Encdump.dll5.0.1.1200,70412-Jan-200804:30x64
Audiocore.mofNot Applicable4,35213-Dec-200719:46Not Applicable
Audiodg.exe6.0.6000.2075188,06412-Jan-200802:25x86
Audioeng.dll6.0.6000.20751398,84812-Jan-200804:20x86
Audiokse.dll6.0.6000.20751273,92012-Jan-200804:20x86
Audioses.dll6.0.6000.20751115,71212-Jan-200804:20x86

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.This problem was first corrected in Microsoft Windows Vista Service Pack 1.

MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Properties

Article ID: 945444 - Last Review: April 3, 2008 - Revision: 2.1
APPLIES TO
  • Windows Vista Ultimate
  • Windows Vista Home Premium
  • Windows Vista Home Basic
  • Windows Vista Enterprise
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
Keywords: 
kbautohotfix kbwinvistapostrtmfix kbexpertiseadvanced kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe KB945444

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