[wdmaudiodev] Re: USBAudio Driver Fails to Start In Vista
- From: "Hakon Strande" <hakons@xxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 24 Mar 2006 11:46:05 -0800
At this time we do not have firm plans to back port any development of a
Microsoft USB Audio 2.0 class driver to released operating systems but
it seems likely we would at least put a new USB Audio 2.0 class driver
on Windows Update at some point.
To be clear though, at this time no significant development has taken
place based on the 1.9 USB Audio draft spec due to our team's other
Vista deliverables (read: it is pretty hard to ship an OS, and
especially one with an entirely new audio subsystem). :-)
Sincerely,
Hakon Strande
PM Integrated, Internal, External, and Wireless Audio Devices
MediaTech/DMD/Windows Client/Microsoft
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Al Clark
Sent: Friday, March 24, 2006 9:55 AM
To: wdmaudiodev@xxxxxxxxxxxxx; wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: USBAudio Driver Fails to Start In Vista
Hakon,
My understanding is that Iso transfers are not supported at high speed
in Windows. With the release of the USB Audio 2.0 spec will there be
support in Win 2K and XP as well as Vista?
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com
<http://www.danvillesignal.com/> At 11:18 AM 3/24/2006, Hakon Strande
wrote:
Sam,
We have removed many device implementation specific "hacks" in
the USB Audio 1.0 class driver for Vista in an attempt to move the
industry towards implementations that follow our USB Audio design
guidelines (based on the specs of course). Since there is no USB Audio
2.0 spec yet our driver does not support any implementations of the
unfinished USB Audio 2.0 spec.
If you are talking about a USB Audio 1.0 device on a USB 2.0 bus
then it is currently possible to get that to work. Our engineers tell me
that the trick is you need to specify an interval of 8 for the interface
so it uses the same 1ms data distribution of an USB 1.1 device, and you
need to use the descriptors otherwise described in the USB Audio 1.0
spec. Of course this approach still restricts you to the bandwidth of a
Full Speed device regardless of the bus bandwidth and you cannot use an
async endpoint, but it should allow you to stream whilst USB Audio 2.0
is finalized.
Sincerely,
Hakon Strande
PM Integrated, Internal, External, and Wireless Audio Devices
MediaTech/ DMD /Windows Client/Microsoft
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx [
mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx
<mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx> ] On Behalf Of Sam Tertzakian
Sent: Friday, March 24, 2006 3:44 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] USBAudio Driver Fails to Start In Vista
Hi,
I have a USB Audio device that has firmware that complies with
the USB Audio specification. When I plug it into an XP SP2 machine it
loads properly and works ask expected using the inbox MSFT driver.
But, when I plug into Vista the driver installs, but fails to
start. I tried to debug it a bit and saw that the a return value was
//
// MessageId: STATUS_DEVICE_CONFIGURATION_ERROR
//
// MessageText:
//
// The I/O device is configured incorrectly or the
configuration parameters to the driver are incorrect.
//
This was the return when it was trying to create filter
factories.
I believe it is a USB 2.0 Audio device. It supports stereo
audio.
Is there a known problem with the USB Audio driver in Vista? It
seems to me that if it works under XP SP2, it should also work under
Vista.
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