Garbled Video from Camera That Is Connected By Using an IEEE 1394 CardBus Adapter (294465)
The information in this article applies to:
- Microsoft Windows Millennium Edition
This article was previously published under Q294465 If this article does not describe your hardware-related issue, please see the following Microsoft Web site to view more articles about hardware: IMPORTANT: This article contains information about modifying the registry. Before you
modify the registry, make sure to back it up and make sure that you understand how to restore
the registry if a problem occurs. For information about how to back up, restore, and edit the
registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
SYMPTOMS
When you try to view the video output from My Computer or any other digital video program, the video may not be displayed properly. Note that this is more likely to occur when you are using an IEEE 1394 CardBus adapter that is inserted into slot 2 of the CardBus controller while slot 1 is empty.
CAUSE
This issue can be caused by a delay in data transfer when you are using the PCI Clock Run protocol with the TI1450 CardBus controller if the IEEE 1394 adapter is in slot 2 while slot 1 is empty. This leaves slot 1 in a D2 power state. The transfer delay itself is what is garbling the video, as the controller is only receiving partial data.
RESOLUTIONWARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk.
To work around this issue, use either of the following methods:
Method 1
Use slot 1 for the IEEE 1394 PC Card, or if possible, insert another card into slot 1.
Method 2
Disable power management for the CardBus controller. To do so, use Registry Editor (Regedit.exe) to locate the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\PCI
Add a new binary value to this key, and replace the default name "New Value #1" with "AC1B104C" (without the quotation marks). Modify the value of AC1B104C to "00 00 00 20" (without the quotation marks), and then restart your computer. NOTE: This setting does not affect the CardBus controller's ability to go into Standby or Hibernate.
Modification Type: | Major | Last Reviewed: | 8/8/2006 |
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Keywords: | kbHardware kbprb KB294465 |
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