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Symptoms

You enable the USB Selective Suspend feature on a computer that is running Windows 7 or Windows Server 2008 R2. Then, the computer stops responding when one or more of the following conditions are true:

  • The computer enters the Sleep or Hibernate state.

  • One or more USB devices resumes from an idle state after a period of inactivity.

Note You can restart the computer to recover from this issue.

Cause

This issue occurs when an attached USB device resumes from the USB Selective Suspend state, and the USB hub incorrectly reports that the device is disconnected from the USB hub port. This incorrect status report may be caused by a hardware error in the USB hub or in the attached USB device. Then, the Microsoft USB hub driver (Usbhub.sys) incorrectly tries to obtain a spinlock that has already been obtained in the same thread. This causes a kernel-mode deadlock. Therefore, the computer stops responding.

Resolution

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 the problem described in this article. 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=supportNote 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

This hotfix can be applied on computers that are running Windows 7 or Windows Server 2008 R2.



Restart requirement

You have to restart the computer after you apply this hotfix.

Registry information

To use one of the hotfixes in this package, you do not have to make any changes to the registry.

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 7 and Windows Server 2008 R2 file information notes

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are
listed separately
. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Usbccgp.sys

6.1.7600.16385

75,264

13-Jul-2009

23:51

x86

Usbhub.sys

6.1.7600.20521

258,560

05-Sep-2009

03:00

x86

Usbd.sys

6.1.7600.16385

5,888

13-Jul-2009

23:51

Not Applicable

Usbehci.sys

6.1.7600.16385

41,472

13-Jul-2009

23:51

x86

Usbhub.sys

6.1.7600.20521

258,560

05-Sep-2009

03:00

x86

Usbohci.sys

6.1.7600.16385

20,480

13-Jul-2009

23:51

x86

Usbport.sys

6.1.7600.16385

284,160

13-Jul-2009

23:51

x86

Usbuhci.sys

6.1.7600.16385

24,064

13-Jul-2009

23:51

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Usbccgp.sys

6.1.7600.16385

98,816

14-Jul-2009

00:06

x64

Usbhub.sys

6.1.7600.20521

343,040

05-Sep-2009

03:24

x64

Usbd.sys

6.1.7600.16385

7,936

14-Jul-2009

00:06

x64

Usbehci.sys

6.1.7600.16385

51,200

14-Jul-2009

00:06

x64

Usbhub.sys

6.1.7600.20521

343,040

05-Sep-2009

03:24

x64

Usbohci.sys

6.1.7600.16385

25,600

14-Jul-2009

00:06

x64

Usbport.sys

6.1.7600.16385

324,608

14-Jul-2009

00:06

x64

Usbuhci.sys

6.1.7600.16385

30,720

14-Jul-2009

00:06

x64

For all supported Itanium-based versions of Windows Server 2008 R2


File name

File version

File size

Date

Time

Platform

Usbccgp.sys

6.1.7600.16385

220,160

14-Jul-2009

00:21

IA-64

Usbhub.sys

6.1.7600.20521

972,800

05-Sep-2009

02:51

IA-64

Usbd.sys

6.1.7600.16385

11,904

14-Jul-2009

00:21

Not Applicable

Usbehci.sys

6.1.7600.16385

130,048

14-Jul-2009

00:21

IA-64

Usbhub.sys

6.1.7600.20521

972,800

05-Sep-2009

02:51

IA-64

Usbohci.sys

6.1.7600.16385

64,000

14-Jul-2009

00:21

IA-64

Usbport.sys

6.1.7600.16385

648,192

14-Jul-2009

00:21

IA-64

Usbuhci.sys

6.1.7600.16385

86,016

14-Jul-2009

00:21

IA-64

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


More Information

After you apply this hotfix, the issue described in the "Symptoms" section will not occur. However, the following issues may occur:

  1. An attached USB device resumes from the USB Selective Suspend state when the computer is running. Then, Windows may report that the USB device is disconnected from the computer, or that the USB device is reconnected to the computer. Additionally, the affected USB device is unresponsive for several seconds to less than one minute.

  2. When the computer tries to enter a Sleep or Hibernate state, there is no visible indication that an attached USB device is disconnected. When the computer resumes from the Sleep or Hibernate state, Windows reports that the USB device is disconnected from and reconnected to the computer.

To work around this issue, clear the Allow the computer to turn off this device to save power check box for the affected USB device or USB Root Hub:

  1. Click Start, type device manager in the Start Search box, and then press ENTER.

    Note If you are prompted for an administrator password or confirmation, type your password and then click Continue.

  2. On the View menu, click Devices by connection.

  3. Expand the ACPI node, expand Microsoft ACPI-Compliant System, and then expand PCI bus.

  4. Several USB universal host controllers will be listed.

  5. Expand each USB universal host controller node, and then expand successive subnodes until you find the name of the USB device.

  6. When you locate the affected device, right-click the device, and then click Properties.

  7. If there is a Power Management tab, click the Power Management tab, and clear the Allow the computer to turn off this device to save power check box, then click OK.

  8. If there is no Power Management tab, click Cancel, then double-click the associated USB Root Hub, click the Power Management tab, clear the Allow the computer to turn off this device to save power check box, then click OK.

Note You may have more than one attached USB device or USB hub. You can apply these steps to each USB device or USB Root Hub in turn to identify which one causes the issues. If the issue does not occur after you apply these steps to a particular device or USB Root Hub, then that device or USB Root Hub causes the issue.

For more information about USB Selective Suspend, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn.microsoft.com/en-us/library/ms793200.aspxFor more information about System Sleeping States, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn.microsoft.com/en-us/library/ms798270.aspx

Additional file information for Windows Server 2008 R2 and for Windows 7

Additional files for all supported x86-based versions of Windows 7

File name

Package_1_for_kb974476~31bf3856ad364e35~x86~~6.1.2.0.mum

File version

File size

2,527

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_2_for_kb974476~31bf3856ad364e35~x86~~6.1.2.0.mum

File version

File size

2,527

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_for_kb974476_rtm~31bf3856ad364e35~x86~~6.1.2.0.mum

File version

File size

1,714

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

X86_usb.inf_31bf3856ad364e35_6.1.7600.20521_none_cb953a2a88b678cf.manifest

File version

File size

2,840

Date (UTC)

08-Sep-2009

Time (UTC)

22:13

Platform

Not Applicable

File name

X86_usbport.inf_31bf3856ad364e35_6.1.7600.20521_none_be5f32a77dd1c6b6.manifest

File version

File size

5,540

Date (UTC)

08-Sep-2009

Time (UTC)

22:13

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows Server 2008 R2 and of Windows 7

File name

Amd64_usb.inf_31bf3856ad364e35_6.1.7600.20521_none_27b3d5ae4113ea05.manifest

File version

File size

2,844

Date (UTC)

08-Sep-2009

Time (UTC)

22:15

Platform

Not Applicable

File name

Amd64_usbport.inf_31bf3856ad364e35_6.1.7600.20521_none_1a7dce2b362f37ec.manifest

File version

File size

5,544

Date (UTC)

08-Sep-2009

Time (UTC)

22:15

Platform

Not Applicable

File name

Package_1_for_kb974476~31bf3856ad364e35~amd64~~6.1.2.0.mum

File version

File size

2,541

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_2_for_kb974476~31bf3856ad364e35~amd64~~6.1.2.0.mum

File version

File size

2,541

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_for_kb974476_rtm~31bf3856ad364e35~amd64~~6.1.2.0.mum

File version

File size

1,724

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

Additional files for all supported Itanium-based versions of Windows Server 2008 R2

File name

Ia64_usb.inf_31bf3856ad364e35_6.1.7600.20521_none_cb96de2088b481cb.manifest

File version

File size

2,842

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Ia64_usbport.inf_31bf3856ad364e35_6.1.7600.20521_none_be60d69d7dcfcfb2.manifest

File version

File size

5,542

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_1_for_kb974476~31bf3856ad364e35~ia64~~6.1.2.0.mum

File version

File size

2,534

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

File name

Package_for_kb974476_rtm~31bf3856ad364e35~ia64~~6.1.2.0.mum

File version

File size

1,444

Date (UTC)

08-Sep-2009

Time (UTC)

22:11

Platform

Not Applicable

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