Microsoft KB Archive/942494

= FIX: Error message when you plug a streaming audio device into a USB port on a Windows Embedded CE 6.0-based device and then detach the streaming audio device: &quot;out of memory&quot; =

Article ID: 942494

Article Last Modified on 10/15/2007

-

APPLIES TO


 * Windows Embedded CE 6.0

-



SYMPTOMS
When you use a USB device on a Windows Embedded CE 6.0-based device, you may experience one or more of the following symptoms.

Symptom 1
You plug a streaming audio device into a USB port on a Windows Embedded CE 6.0-based device. Then, you detach the streaming audio device. If you take this series of actions multiple times, you may receive the following error message:

out of memory.

Or, you may experience other unexpected behavior on the Windows Embedded CE 6.0-based device.

Symptom 2
The performance of the USB connection is slow.

Symptom 3
The transfer speed of the USB bus is slow.



Cause 1
Symptom 1 occurs because some memory is not released every time that a streaming audio device is detached from the USB port.

Cause 2
Symptom 2 occurs because the USB serial control packets are invalid. This situation may cause the connection to use the default baud instead of a higher baud. The default baud is 9600 baud.

Cause 3
Symptom 3 occurs because the bInterval parameter of the USB_ENDPOINT_DESCRIPTOR data structure is handled incorrectly. This situation causes the transfer speed of the USB bus to drop.



Software update information
A supported software update is now available from Microsoft as Windows CE 5.0 Platform Builder Monthly Update (September 2007). You can confirm this by scrolling to the &quot;File information&quot; section of this article. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is:

Product version-yymmdd-kbnnnnnn-processor type

For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites
This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement
After you apply this software update, you must perform a clean build of the whole platform. To clean the platform, click Clean on the Build menu. To build the platform, click Build Platform on the Build menu. You do not have to restart the device after you apply this software update.

Update replacement information
This update does not replace any other updates.

File information
The English version of this software update package has the file attributes or the later file attributes that are listed in the following table:

The English version of this software update package 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.



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



MORE INFORMATION
For more information about the USB_ENDPOINT_DESCRIPTOR data structure, visit the following Microsoft Developer Network (MSDN) Web site:

https://msdn2.microsoft.com/en-us/library/aa930503.aspx

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbqfe kbpubtypekc kbexpertiseadvanced kbhotfixserver KB942494

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.