[wdmaudiodev] Re: USB Audio Driver/Device problems
- From: Steve Hayashi <sthayashi@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 6 Nov 2009 18:02:42 -0500
I'm pretty sure it is a query failure bug, though it'd be nice if the driver
tried a little harder with the query. Even better would be to avoid the
queries it makes in favor of last known values. I suspect if I want that
though, I'll need to break out the DDK.
It doesn't get hung up on any one query though. Sometimes it gets hung up
on Get_Curr for volume. Sometimes it's Get_RES for volume. And other times
it's Get_Min for treble.
Or am I misunderstanding the question?
-Steve
On Fri, Nov 6, 2009 at 1:45 PM, DJ Sisolak
<dsisolak@xxxxxxxxxxxxxxxxxxxxxx>wrote:
> 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
> ******************
>
> WDMAUDIODEV addresses:
> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
> Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
>
> URL to WDMAUDIODEV page:
> http://www.wdmaudiodev.com/
>
> ******************
>
> WDMAUDIODEV addresses:
> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
> Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
>
> URL to WDMAUDIODEV page:
> http://www.wdmaudiodev.com/
>
>
Other related posts:
