Spencer Russell wrote: > I'm using jackd 0.99.50, which I thought had Rui's usx2y patch. > Perhaps I need to patch something manually? > Is this about having 4 playback ports on the jackd alsa_pcm backend driver? To speak the truth, I've never seen such a setup, either with the (my) new alsa driver (from jackd 0.99.42) nor with karten's original one. But that's probable, due to the fact that I own a US-224, and I'm happy with 2 channels which, I repeat, its what I ever seen. BTW, shouldn't the US-428 have 8 playback channels, the US-224 have 4, and finally 2 for US-122? Karsten, would you kindly checkon whether this makes sense? Is there anything (that I) left behind? Things to check are about: - using standard "alsa" driver code-path against "hw:N" - using (my) experimental "alsa" driver against "hw:N,2" (rawusb) - using yours original patch for the "usx2y" driver against "hw:N" and see if whether there is any difference regarding the number of channels for the US-428. IMO the correct number of channels should be present on ALL of the above. Feel free to point out if I did any mistake ;) Cheers. -- rncbc aka Rui Nuno Capela rncbc@xxxxxxxxx > > On Mon, Feb 21, 2005 at 12:28:32AM +0100, Karsten Wiese wrote: >> Am Sonntag 20 Februar 2005 10:41 schrieb Spencer Russell: >> > Hey all, >> > So my US428 seems to be behaving now(although with the Layla20 >> > that I just bought, the tascam is being used more as a control >> > surface then an audio interface). But I can't get any audio input >> > on channels 3 and 4. Jack seems unable to start the tascam as a 4 >> > channel device. Is there something I have to do to enable those >> > channels? Thanks >> > >> hmmmm, have you tried rui's addition to jack's alsa driver? >> if so, it could be that one doesn't yet support channel 3+4. >> don't know exactly, haven't checked yet. >> currently you can use ch 3 and 4 with my usx2y jack driver. >> >> best regards, >> Karsten >> >> >