New subject: USB audio device and JACK

26 Jun 2009

...
  I have it running here. And it works
 in douplex mode, but you cant switch off the direct
 monitoring, which is quite a pity. But i can confirm that
 there is no mixer availible.

 I cant tell what did it, but it worked fine from the
 beginning. I have build alsa from source and loaded firmware
 for the tascam usxy cards. Might be quite the same
 procedure, i assume.

 Bon chance,

 Bjoern

  Hello everyone!
    I had a USB audio device here, a Zoom  h4n, portable recorder/audio 
 > interface. When I connect it to my box, it shows  up
  and ALSA finds it.
     First: ALSA can't open the mixer, no
 elemtns found, alsamixer says.

 That's pretty normal with USB devices

     Second: I can't use JACK with it, 
although I read on some forum, that a chap 
 > managed with Fedora FC6. JACK tells me something  about
  broken pipe. It runs, 
 > but there's no sound and I definitely have to  "killall
  -9" it. :-( I tried 
 > JACK with different period sizes (-p) and  different
  frames per period (-n), 
 > different samplerates, although I can set these  on the
  Zoom, before I connect 
 > it. As I said: ALSA can record from it and play  sounds
  using it.
     Does anyone of you have an idea on the 
subject?

 Have you tried to run JACK in "capture only" ("-C"  IIRC)
  mode?
 If I understand correctly, that device acts only as  input
  device...?

     Kindest regards
          Julien  
 HTH
 Ciao
 -- 
 Emiliano Grilli
 Linux user #209089 
 http://www.emillo.net
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Re: [LAU] USB audio device and JACK