Microsoft KB Archive/917969

= PCI devices may not work correctly when a D3 Cold or D3 Hot to D0 power transition occurs in Windows Server 2003 =

Article ID: 917969

Article Last Modified on 10/11/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
 * Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
 * Microsoft Windows Server 2003, Datacenter x64 Edition
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Standard x64 Edition
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows XP Professional x64 Edition

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SYMPTOMS
Microsoft Windows Server 2003 does not meet the specification for the peripheral component interconnect (PCI) 1.2 state transition recovery time requirement. Because of this problem, you may experience one of more of the following symptoms:
 * A PCI device may cause the PCI bus to stop responding during the D3 Cold or D3 Hot to D0 power transition. When this problem occurs, the computer may become unresponsive to any user input. For example, you may experience no mouse pointer movement, no keyboard input, and no keyboard status light changes in this situation. Additionally, the PCI bus stops responding, or &quot;hangs,&quot; and no I/O over the PCI bus is possible.

Note The specification defines the D0, D1, D2, D3 Hot, and D3 Cold states. D0 means that the power supply for a device is on. D3 Cold means that the power supply for a device is off. D3 Hot means that the device still receives minimal power.
 * A PCI device may not reinitialize during the D3 Cold or D3 Hot to D0 power transition. When this problem occurs, the device does not work after the computer has resumed.
 * Other unexpected behavior may occur depending on the PCI device configuration.

This problem might occur when the computer is resumed from standby, and a D3 to D0 transition occurs for each PCI device that is being used.



CAUSE
This problem occurs because Windows Server 2003 does not honor the recovery time requirement before accessing a PCI device. Therefore, the PCI.sys bus driver starts to program the state of the device prematurely. For example, Windows Server 2003 accesses a PCI device before the PCI.sys bus driver configures the base address registers.

PCI devices require a specified minimum period of time to initialize their internal state from D3 Cold before the devices are ready to communicate with software or other PCI devices on the PCI bus. Because Windows Server 2003 does not honor the minimum wait time after powering down a PCI device, PCI bus or hardware abstraction layer (HAL) problems may occur.



RESOLUTION
Microsoft has released an update that brings Windows Server 2003 into compliance with the PCI 1.2 state transition recovery time requirement.

Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must be running one of the following operating systems to install this hotfix:
 * Windows Server 2003 with Service Pack 1
 * Windows Server 2003, Itanium version with Service Pack 1
 * Windows x64 versions

Restart requirement
You must restart your 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 Server 2003, Itanium-based versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbqfe kbexpertiseadvanced kbhotfixserver kbwinserv2003presp2fix KB917969

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