1394 Audio/Video Control Device Stops Working Unexpectedly

View products that this article applies to.

This article was previously published under Q284837

SYMPTOMS

After you play or record digital audio or video by using an Audio Video Control (AV/C) device, such as a 1394 AV/C hard disk or DV camcorder, the 1394 bus may stop functioning.

The error message that is displayed by your media control software will vary, but will typically indicate that one or more of the devices on the 1394 bus cannot be accessed, or has stopped working.

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CAUSE

The Microsoft-supplied 1394 Open Host Controller Interface (OHCI) driver may attempt to lock a bus speed that is faster than the controller supports. The Ohci1394.sys driver defaults the "spd" field setting in the REQUEST_ASYNC_LOCK OUTPUT_MORE-Immediate descriptor, which may result in a fatal error if it is set over the 1394 OHCI controller's maximum speed capability.

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RESOLUTION

The English version of this fix should have the following file attributes or later:

                                                          Operating 
Date        Time     Version        Size    File name     System
------------------------------------------------------------------------
03/08/2001  09:29pm  4.10.2228      37,040  Ohci1394.sys  Windows 98
                                                          Second Edition
03/09/2001  01:08pm  4.90.3004      49,872  Ohci1394.sys  Windows Me
03/21/2001  06:18pm  5.0.2195.3395  37,392  ohci1394.sys  Windows 2000

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Microsoft Windows 98

Windows 98 version 4.10.1998 (the original release) includes limited support for 1394 technology, which was an emerging technology when Windows 98 was released. Microsoft has determined that functional upgrades to 1394 support cannot be made sufficiently reliable, and therefore has no plans to produce updates or enhancements. For this reason, Microsoft recommends that you update your operating system to a newer version if you are experiencing the problems that are documented in this article.

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Microsoft Windows 98 Second Edition

Before you install the update that is described in this article, you must install the updates that are described in the following Microsoft Knowledge Base articles:

242975 (http://support.microsoft.com/kb/242975/EN-US/ ) Update for 1394 Storage Peripherals in Windows 98 Second Edition

267304 (http://support.microsoft.com/kb/267304/EN-US/ ) Trap 14 on Resume from Standby with FireWire Device

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Windows 2000

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 (http://support.microsoft.com/kb/260910/EN-US/ ) How to Obtain the Latest Windows 2000 Service Pack

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

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MORE INFORMATION

This problem has been observed with, but is not necessarily limited to, VIA Fire VT6xxx-series IEEE 1394 chip sets.

For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

206071 (http://support.microsoft.com/kb/206071/EN-US/ ) General Information on Windows 98 and SE Hotfixes

For additional information about Windows ME hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

295413 (http://support.microsoft.com/kb/295413/EN-US/ ) General Information About Windows Millennium Edition Hotfixes

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