[wdmaudiodev] Re: USB Audio Driver/Device problems

  • From: DJ Sisolak <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Fri, 6 Nov 2009 10:45:58 -0800

I agree with Clemens. This is likely due to the failure to respond to the 
query. Windows 7 and Vista both perform much more validation for USB Audio 
devices than XP.  

What was the target of the query? 

Thx,
DJ

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Clemens Ladisch
Sent: Thursday, November 05, 2009 11:31 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: USB Audio Driver/Device problems

Steve Hayashi wrote:
> Unfortunately, my device will send a stall response to the member variable
> query

Which member variable?  Is the query correct, i.e., do the device's
descriptors indicate that that query should be supported?

This looks like a typical firmware bug; many low-quality USB devices
have not been written against the spec but to work with some random
Windows version that was currently available for testing.

> My primary goal is to get the usb audio device working normally all the
> time, ideally through some minor change that I was previously unaware of.

Well, neither replacing the device's firmware not writing your own
USB audio driver looks like a minor change.


Best regards,
Clemens
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