Hello,
I am getting the error that says "function driver could not be loaded " when I plug in the USB-device.
Device enumeration fails and gets Vid and Pid as 0. What could be the problem ?
Strangely, once in random, everything works fine and it asks for the device driver. Is there anything that I am missing in device side required for the enumeration ?
Thanks in advance
Srikanth
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Hello,
I am getting the error that says "function driver could
not be loaded " when I plug in the USB-device. Device enumeration fails
and gets Vid and Pid as 0. ( in the ENUM key of registry )
Is there any log that I can enable to see what is
happening ? Does the USB host stack in Windows log the set of requests
it sends to device and the response it got in case of errors ?
Thanks in advance
Srikanth
See Troubleshooting Device Installation, in the DDK. Also, do a search on
SetupApi.log in the SDK and MSDN. This will tell you if you got very far in
the enumeration of your device.
The debug version of the usb files might help, I’ve never tried them to see
if they logged errors. You have something very fundamentally wrong though.
Is there a device with a yellow “!” next to it in the device manager? What
does that device say when you double click on it and read about the error?
Have you tried USB Check or the newer compliance test, from www.usb.org?
That should show you what is happening.
Marc Reinig
System Solutions
“Srikanth R” wrote in message news:xxxxx@ntdev…
> I am getting the error that says "function driver could
> not be loaded " when I plug in the USB-device. Device enumeration fails
> and gets Vid and Pid as 0. ( in the ENUM key of registry )
>
> Is there any log that I can enable to see what is
> happening ? Does the USB host stack in Windows log the set of requests
> it sends to device and the response it got in case of errors ?
It says function driver could not be loaded . If I lookup in the enum
registry key, the VID and PID appears to be vid_0000 and pid_0000.
Once in some 10 retries, it works. Can there be some timing issue ?
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Marc Reinig
Sent: Thursday, July 18, 2002 6:55 AM
To: NT Developers Interest List
Subject: [ntdev] Re: USB - Function driver was not specified error
See Troubleshooting Device Installation, in the DDK. Also, do a search
on SetupApi.log in the SDK and MSDN. This will tell you if you got very
far in the enumeration of your device.
The debug version of the usb files might help, I’ve never tried them to
see if they logged errors. You have something very fundamentally wrong
though.
Is there a device with a yellow “!” next to it in the device manager?
What does that device say when you double click on it and read about the
error?
Have you tried USB Check or the newer compliance test, from www.usb.org?
That should show you what is happening.
Marc Reinig
System Solutions
“Srikanth R” wrote in message
news:xxxxx@ntdev…
> I am getting the error that says "function driver could
> not be loaded " when I plug in the USB-device. Device enumeration
> fails and gets Vid and Pid as 0. ( in the ENUM key of registry )
>
> Is there any log that I can enable to see what is
> happening ? Does the USB host stack in Windows log the set of requests
> it sends to device and the response it got in case of errors ?
—
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Hello,
yes your USB adapter has a timing problem. Use a USB tracer to see
what is wrong.
elli
Where do I get this USB tracer ? Any website reference ?
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Mathias Ellinger
Sent: Thursday, July 18, 2002 10:30 PM
To: NT Developers Interest List
Subject: [ntdev] Re: USB - Function driver was not specified error
Hello,
yes your USB adapter has a timing problem. Use a USB tracer to see what
is wrong.
elli
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