USB keyboard does not work when the computer resumes from standby (815450)



The information in this article applies to:

  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Datacenter Server
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Server

SYMPTOMS

Third-party keyboards and the Microsoft Natural Keyboard Pro may not work when your computer resumes from standby.

CAUSE

This problem may occur if all the following conditions are true:
  • Your keyboard has a built-in USB hub.
  • Your keyboard is plugged in to a USB 2.0 hub.
  • Your computer uses the ICH4 USB 2.0 controller.

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   12-Dec-2003  15:19  5.0.2195.6882      24,752  Hidclass.sys
   12-Dec-2003  14:37  5.0.2195.6882      24,976  Openhci.sys
   12-Dec-2003  14:37  5.0.2195.6882      32,944  Uhcd.sys
   20-Jan-2004  22:55                     32,543  Usb.inf
   12-Dec-2003  14:37  5.0.2195.6882      20,752  Usbd.sys
   12-Dec-2003  14:37  5.0.2195.6882      19,792  Usbehci.sys
   16-Jan-2004  23:06  5.0.2195.6891      50,032  Usbhub20.sys
   12-Dec-2003  14:37  5.0.2195.6882     138,768  Usbport.sys
Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files. You must install Windows 2000 Service Pack 3 (SP3) before you install this hotfix.

Note Frequently, this hotfix resolves the problem that is described in the "Symptoms" section. However, this hotfix does not resolve hardware-specific problems that can cause these symptoms.

After you apply this hotfix, you must create a new registry key to enable forced enumeration when the computer resumes from standby:
  1. Start Registry Editor.
  2. Locate and then click the following registry subkey:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Usb

  3. On the Edit menu, click New, and then click REG_DWORD.
  4. In the Name box, type DisableForceEnumeration, and then press ENTER.
  5. Double-click the DisableForceEnumeration value.
  6. In the Edit DWORD Value box, under Base, click to select the Decimal check box, and then under Value data: type 1.
  7. Quit Registry Editor.

WORKAROUND

To work around this issue, use one of the following methods:
  • Unplug the keyboard, and then plug it back in.
  • Plug the keyboard directly into the computer.

STATUS

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

Modification Type:MinorLast Reviewed:10/13/2005
Keywords:kbHotfixServer kbQFE kbWinXPsp1fix kbWin2000preSP5fix kbQFE kbBug KB815450 kbAudEndUser