USB SD card reader loses capability to detect media change in Windows

This article describes an issue that occurs after you resume the computer from sleep mode in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. A hotfix is available to resolve this issue. The hotfix has a prerequisite.

Symptoms

When this issue occurs, the Secure Digital (SD) card insertion is not detected by universal serial bus (USB) SD card reader.

Note This issue can occur, but it is not limited to, if the computer has the USB selective suspend feature disabled. For more information about this feature, see About the USB selective suspend feature.

Cause

This issue occurs because the disk driver does not issue a test unit to the card reader controller after the system is resumed from sleeping states. Therefore, the system cannot detect the media change status.

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.

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, submit a request to 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 website: 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.


Prerequisites

To apply this update, you must have update 2919355 installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

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

Restart requirement

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

Hotfix replacement information

This hotfix does not replace a previously released hotfix.
File information

Status

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

More Information

About the USB selective suspend feature

By default, this feature is disabled by desktop computers for USB mass storage.

You can check the status of USB selective suspend setting in the USB settings entry. The entry is under the Advanced settings tab in the Power Options dialog box.

References

See the terminology that Microsoft uses to describe software updates.
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Artikel-id: 3022235 – senaste granskning 11 feb. 2015 – revision: 1

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