Soundcard matrix: removing some M-Audio USB devices

Soundcard matrix: removing some M-Audio USB devices

[Frank Barknecht]

Hallo,

I'd like to propose changing the status of three M-Audio USB
devices in the soundcard matrix to "unsupported on 2.6". The Quattro,
Audiophile USB and reportedly the Duo all don't comply to the USB
specification, as has been discussed here and on linux-usb-dev in the
recent past.

Thus they are not useable on 2.6 kernels anymore and should be removed
from the list of supported cards - or at least should have a red
WARNING sticker applied. It would be - and already is - really anoying
to someone who buys such a device and later finds out, that it is not
supported, although the website say differently.

ciao
-- 
 Frank Barknecht                               _ ______footils.org__


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Re: Soundcard matrix: removing some M-Audio USB devices

[James Courtier-Dutton]

Frank Barknecht wrote:
> Hallo,
> 
> I'd like to propose changing the status of three M-Audio USB
> devices in the soundcard matrix to "unsupported on 2.6". The Quattro,
> Audiophile USB and reportedly the Duo all don't comply to the USB
> specification, as has been discussed here and on linux-usb-dev in the
> recent past.
> 
> Thus they are not useable on 2.6 kernels anymore and should be removed
> from the list of supported cards - or at least should have a red
> WARNING sticker applied. It would be - and already is - really anoying
> to someone who buys such a device and later finds out, that it is not
> supported, although the website say differently.
> 
> ciao

Frank,

You will be lucky to find any sound card complying with the USB Audio 
spec, as the spec is written so badly.

Cheers
James



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Re: Soundcard matrix: removing some M-Audio USB devices

[Frank Barknecht]

Hallo,
James Courtier-Dutton hat gesagt: // James Courtier-Dutton wrote:

> You will be lucky to find any sound card complying with the USB Audio 
> spec, as the spec is written so badly.

This is the USB spec I'm referring, not the USB AUDIO spec. Those
M-Audio devices aren't even recognized as being USB devices by the
kernel.

ciao
-- 
 Frank Barknecht                               _ ______footils.org__


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Re: Soundcard matrix: removing some M-Audio USB devices

[James Courtier-Dutton]

Frank Barknecht wrote:
> Hallo,
> James Courtier-Dutton hat gesagt: // James Courtier-Dutton wrote:
> 
> 
>>You will be lucky to find any sound card complying with the USB Audio 
>>spec, as the spec is written so badly.
> 
> 
> This is the USB spec I'm referring, not the USB AUDIO spec. Those
> M-Audio devices aren't even recognized as being USB devices by the
> kernel.
> 
> ciao

So "lsusb" gives no output for the device?
I have seen some usb devices that connect, and then for some reason the 
kernel does not like them, and disconnects them before you have a chance 
to see them in lsusb.

Which part of the USB spec do they break ?

Cheers
James


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Re: Soundcard matrix: removing some M-Audio USB devices

[Patrick Shirkey]

James Courtier-Dutton wrote:
> Frank Barknecht wrote:
> 
>> Hallo,
>> James Courtier-Dutton hat gesagt: // James Courtier-Dutton wrote:
>>
>>
>>> You will be lucky to find any sound card complying with the USB Audio 
>>> spec, as the spec is written so badly.
>>
>>
>>
>> This is the USB spec I'm referring, not the USB AUDIO spec. Those
>> M-Audio devices aren't even recognized as being USB devices by the
>> kernel.
>>
>> ciao
> 
> 
> So "lsusb" gives no output for the device?
> I have seen some usb devices that connect, and then for some reason the 
> kernel does not like them, and disconnects them before you have a chance 
> to see them in lsusb.
> 
> Which part of the USB spec do they break ?
> 

They have inappropriate altsettings. There is a patch which Sampo 
Savolainen just released but it probably won't be accepted to the Kernel.

I'll make a mention of it.


-- 
Patrick Shirkey - Boost Hardware Ltd.
Http://www.boosthardware.com
Http://www.djcj.org/LAU/guide/ - The Linux Audio Users guide
Http://www.djcj.org/gigs/ - Gigs guide Korea
========================================


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Tethered to the now toppled cart, the donkey was unable to escape before 
the arrival of U.S. troops.

United Press International
Rockets on donkeys hit major Baghdad sites

By P. MITCHELL PROTHERO
Published 11/21/2003 11:13 AM



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