When a DirectX 10 application runs on a Windows Vista-based computer that has multiple graphics cards, the computer does not use the secondary graphics card

Support for Windows Vista without any service packs installed ended on April 13, 2010. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows


Consider the following scenario:
  • You have a Windows Vista-based computer.
  • The computer uses two or more DirectX-compatible graphics processing units (GPUs) in a linked configuration.
  • You are using a DirectX 10 application and driver.
In this scenario, the computer's graphics performance indicates that only a single GPU is being used.


This problem occurs because the operating system does not forward driver-render requests to the secondary GPU.


Service pack information

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

Update information

The following files are available for download from the Microsoft Download Center:

Windows Vista, 32-bit versions

Download Download the 936710 package now.

Windows Vista, 64-bit versions

Download Download the 936710 package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.


No prerequisites are required.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

File information

The English version of this update 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
File nameFile versionFile sizeDateTimePlatform
Update.mumNot applicable2,45831-May-200710:46Not applicable
X86_c30b40dd95da1981e8329107227239f7_31bf3856ad364e35_6.0.6000.20609_none_40e3797decb919c7.manifestNot applicable70031-May-200710:46Not applicable
X86_dd1f28178fbe0d361bf2b5ecf100d67b_31bf3856ad364e35_6.0.6000.20609_none_7d63161e9324756f.manifestNot applicable70631-May-200710:46Not applicable
X86_microsoft-windows-directx-direct3d10_31bf3856ad364e35_6.0.6000.20609_none_ee64c477e99af382.manifestNot applicable6,09231-May-200710:49Not applicable
X86_microsoft-windows-directx-dxgi_31bf3856ad364e35_6.0.6000.20609_none_392ad72c3a7baf89.manifestNot applicable5,75131-May-200710:49Not applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_077f65cee3272d8f4a0c7eb0d43d5977_31bf3856ad364e35_6.0.6000.20609_none_c826ecea2fa8c5e1.manifestNot applicable1,06031-May-200710:47Not applicable
Amd64_22d4d840db7ac6a72374f8699c9c202b_31bf3856ad364e35_6.0.6000.20609_none_0227f0b100e98e84.manifestNot applicable1,04831-May-200710:47Not applicable
Amd64_microsoft-windows-directx-direct3d10_31bf3856ad364e35_6.0.6000.20609_none_4a835ffba1f864b8.manifestNot applicable6,10831-May-200710:54Not applicable
Amd64_microsoft-windows-directx-dxgi_31bf3856ad364e35_6.0.6000.20609_none_954972aff2d920bf.manifestNot applicable5,77131-May-200710:54Not applicable
Update.mumNot applicable2,45831-May-200710:46Not applicable


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 Windows Vista Service Pack 1.

More Information

For more information, 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

Artikkel-ID: 936710 – Forrige gjennomgang: 9. okt. 2011 – Revisjon: 1