FIX: A 1394 device does not start if you plug in device after the computer starts (319274)
The information in this article applies to:
- Microsoft Windows 2000 Driver Development Kit (DDK), when used with:
- the operating system: Microsoft Windows 2000
This article was previously published under Q319274 SYMPTOMS If you plug in a 1394 device while the computer is running,
the device does not work.
Device Manager typically shows a code 10
(failed start) error.
You are more likely to experience this problem
after you repeatedly plug in and unplug the device.CAUSE This problem occurs because the Ohci1394.sys file does not
correctly allocate requested Isoch resources.RESOLUTIONA supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem. To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The global
version of this hotfix has the file attributes (or later) 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 Version Size File name
--------------------------------------------------------------
06-Mar-2002 19:16 5.0.2195.5032 37,648 Ohci1394.sys
MORE INFORMATIONThe Ohci1394.sys file does not allocate requested Isoch
resources if there is not sufficient contiguous memory available for a common
buffer. After this hotfix is applied, the common buffer is not immediately
freed when the device is unplugged. If you later plug in the device again, the
same common buffer can be reused without having to obtain a new block of
contiguous memory. REFERENCESFor more information about 1394 drivers, see the Windows
2000 Driver Development Kit.
| Modification Type: | Minor | Last Reviewed: | 10/19/2005 |
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| Keywords: | kbHotfixServer kbQFE kbfix kbOSWin2000fix kbWin2000sp3fix KB319274 kbAudDeveloper |
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