A Windows Vista-based computer that uses a Mobile Intel 945GM Express Chipset may occasionally not wake from sleep

This article has been archived. It is offered "as is" and will no longer be updated.
A Windows Vista-based computer that uses a Mobile Intel 945GM Express Chipset may occasionally not wake from sleep. This problem may occur about one time for every ten times that you try to resume the computer from sleep.
This problem occurs because of a race condition in the ATAportDeviceBusy function. The ATA miniport driver uses the ATAportDeviceBusy function to pause the device queues of the ATAport driver. When the race condition occurs, the queue can remain paused. This behavior causes the computer to stop responding.

This problem occurs if the computer is using the Microsoft Advanced Host Controller Interface (AHCI) chipset driver. The problem does not occur if the computer is using the Intel AHCI chipset driver.

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

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: 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.

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.
File nameFile versionFile sizeDateTimePlatform
Update.mumNot applicable2,02308-Jan-200715:31Not applicable
X86_mshdc.inf_31bf3856ad364e35_6.0.6000.20509_none_dbe4850d3d78c736.manifestNot applicable5,81808-Jan-200715:32Not applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_mshdc.inf_31bf3856ad364e35_6.0.6000.20509_none_38032090f5d6386c.manifestNot applicable5,82008-Jan-200716:17Not applicable
Update.mumNot applicable2,02308-Jan-200715:31Not 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 about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915New file naming schema for Microsoft Windows software update packages
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684Description 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.

Article ID: 929909 - Last Review: 01/16/2015 09:23:52 - Revision: 4.0

Windows Vista Ultimate, Windows Vista Starter, Windows Vista Home Premium, Windows Vista Home Basic, Windows Vista Enterprise, Windows Vista Business 64-bit Edition, Windows Vista Business, 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

  • kbnosurvey kbarchive kbautohotfix kbvistasp1fix kbfix kbbug kbHotfixServer kbqfe kbprb kbexpertiseinter KB929909