On Mon, Nov 24, 2008 at 3:43 PM, Rodrigo Rodrigues da Silva <rodrigopitanga@xxxxxxxxx> wrote: > Hi all, > > 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 What happens if you run the jack server without the -o4 part (as a user) and then in another terminal issue jack_lsp or one of its variants? Does it list your ports? - Mark ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
