[wdmaudiodev] USB Audio Device install under Win2000
- From: "Jerry J. Trantow" <Jerry.Trantow@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 25 Oct 2002 15:44:32 -0500
I'm having a device driver install issue with a USB Audio filter driver.
Recently, we have a number of Win2000 customers that install and get an
error 31 (CM_PROB_FAILED_ADD) on the USB Audio Device entry.
This doesn't occur if a usb audio device which uses the generic USB
Audio class driver has previously been installed on the machine.
I tried to follow the best practices and the install copies all the
files (*.inf, *.sys) into a directory and then calls SetupCopyOEMInf().
The driver is NOT signed.
I have also noticed that on the machines that work with the install, the
driver details for the audio class only list my filter drivers and four
other files:
Portcls.sys
Stream.sys
Ksuser.dll
Wdmaud.drv
On the machines that don't work, the users see a much longer list of
driver files including:
Ksclock.asx
Ksdata.asx
Ksproxy.asx
...
How can I get my driver install to work the first time without
installing the generic drivers first? Has there been a recent change in
Win2000 that prevents this from working with my unsigned driver? Any
ideas???
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