I just bought an M-Audio Fast Track Pro usb audio interface. As far as I know, it is a standard compliant usb-audio device. I could get two separate devices (hw:1,0 and hw:1,1) and use them with aplayer simultaneously. Although, I cannot start Jack (in Ubutu 8.04 with studio packages) with 4 output channels.
This is the output from cat /proc/asound/cards:
rodrigo@snowball:~$ cat /proc/asound/cards
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xc0000000 irq 23
1 [Pro ]: USB-Audio - FastTrack Pro
M-Audio FastTrack Pro at usb-0000:00:0b.0-5, full speed
rodrigo@snowball:~$
This is part of the output I get from jack:
/usr/bin/jackd -v -dalsa -dhw:1 -r48000 -p256 -n2 -Phw:1,1 -S -o4 -zt
(...)
loading driver ..
new client: alsa_pcm, id = 1 type 1 @ 0x80633b8 fd = -1
apparent rate = 48000
creating alsa driver ... hw:1,1|-|256|2|48000|0|4|nomon|swmeter|-|16bit
control device hw:1
configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 2 periods
ALSA: final selected sample format for playback: 16bit little-endian
ALSA: cannot set channel count to 4 for playback
ALSA: cannot configure playback channel
cannot load driver module alsa
I am not sure if it is a Jack related issue (maybe I should ask in jack list as well), but I guess it is caused by lack of support from alsa. I checked the compatibility matrix in alsa's website and indeed fast track pro isn't there.
I'd like to know if it is caused by any compatibility issue and, if positive, if are there any plans to support FT-pro soon? Does anyone have a similar setup and faced the same problems? Any solutions?
Thanks in advance.
Kind regards,
--
Rodrigo Rodrigues da Silva
Engenharia de Computação - Coop8
"Free software is defined as software that respects four fundamental freedoms: (0) freedom to run the software as you wish, (1) freedom to study the source code and modify it to do what you wish, (2) freedom to make and redistribute copies, and (3) freedom to publish modified versions." Richard Stallman
"Não importa como morre o home, importa como vive." Carijó, velho do rio.
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