Article ID: 905202
Article Last Modified on 7/25/2006
APPLIES TO
- Microsoft Windows CE .NET 4.2
SYMPTOMS
When audio playback from the Terminal Server host is redirected to the Microsoft Windows CE Terminal Server client, the Terminal Server client may stop responding to user input for a period lasting up to 20 seconds. This problem only occurs when the following conditions are true:
- Local audio is played at the same time as a short audio clip from the remote session. Examples of local audio are a key click or a touch click.
- The audio driver is based on the model device driver/platform-dependent driver (MDD/PDD) model for audio driver design. This problem does not occur when you use the unified driver model for the audio driver.
CAUSE
A race condition in the software mixer lets two threads wait on the same event at the same time. However, only one thread is signaled to continue when the event occurs.
RESOLUTION
Software update information
A supported software update is now available from Microsoft as Windows CE .NET 4.2 Core OS QFE 905202. 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 previous updates for this product are installed.
Restart requirement
After you install this 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 computer after you apply this update.
Update replacement information
This update does not replace any other updates.
File information
The English version of this package has the file attributes (or later file attributes) that are listed in the following table.
Date Time Size File name ---------------------------------------------------------------------- 19-Aug-2005 19:46 7,476,736 Wincepb42-050819-kb905202-armv4.msi 19-Aug-2005 19:47 7,477,248 Wincepb42-050819-kb905202-armv4i.msi 19-Aug-2005 19:47 7,481,344 Wincepb42-050819-kb905202-mipsii.msi 19-Aug-2005 19:47 7,481,344 Wincepb42-050819-kb905202-mipsii_fp.msi 19-Aug-2005 19:47 7,483,904 Wincepb42-050819-kb905202-mipsiv.msi 19-Aug-2005 19:47 7,483,904 Wincepb42-050819-kb905202-mipsiv_fp.msi 19-Aug-2005 19:46 7,470,592 Wincepb42-050819-kb905202-sh3.msi 19-Aug-2005 19:46 7,470,080 Wincepb42-050819-kb905202-sh4.msi 19-Aug-2005 19:46 7,457,792 Wincepb42-050819-kb905202-x86.msi
The English version of this update 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 tool in Control Panel.
Date Time Size File name ------------------------------------------- Path: Public\Common\Oak\Lib\Armv4\Debug 08-Aug-2005 21:30 226,472 Swmixer.lib Path: Public\Common\Oak\Lib\Armv4\Retail 08-Aug-2005 21:30 137,238 Swmixer.lib Path: Public\Common\Oak\Lib\Armv4i\Debug 08-Aug-2005 21:30 226,884 Swmixer.lib Path: Public\Common\Oak\Lib\Armv4i\Retail 08-Aug-2005 21:30 137,616 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsii\Debug 08-Aug-2005 21:30 234,532 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsii\Retail 08-Aug-2005 21:30 138,690 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsii_fp\Debug 08-Aug-2005 21:30 234,572 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsii_fp\Retail 08-Aug-2005 21:30 138,716 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsiv\Debug 08-Aug-2005 21:30 236,738 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsiv\Retail 08-Aug-2005 21:30 141,314 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsiv_fp\Debug 08-Aug-2005 21:30 236,780 Swmixer.lib Path: Public\Common\Oak\Lib\Mipsiv_fp\Retail 08-Aug-2005 21:30 141,338 Swmixer.lib Path: Public\Common\Oak\Lib\Sh3\Debug 08-Aug-2005 21:30 205,524 Swmixer.lib Path: Public\Common\Oak\Lib\Sh3\Retail 08-Aug-2005 21:30 130,544 Swmixer.lib Path: Public\Common\Oak\Lib\Sh4\Debug 08-Aug-2005 21:30 205,524 Swmixer.lib Path: Public\Common\Oak\Lib\Sh4\Retail 08-Aug-2005 21:30 130,262 Swmixer.lib Path: Public\Common\Oak\Lib\X86\Debug 08-Aug-2005 21:30 193,454 Swmixer.lib Path: Public\Common\Oak\Lib\X86\Retail 08-Aug-2005 21:29 117,428 Swmixer.lib
WORKAROUND
To work around this problem without applying this update, use one of the following methods:
- Use the unified driver model for the audio driver.
Disable the software mixer by providing a sample rate that is not valid in the registry.
[HKEY_LOCAL_MACHINE\Audio\SoftwareMixer] “SampleRate”=dword:FA00 ; 64KHz, which will not work
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
MORE INFORMATION
For more information, 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: kbbug kbfix kbqfe kbpubtypekc KB905202
