Spencer Russell wrote: > The US428 has 4 capture channels and 2 playback channels. Capture > channels 3 and 4 are switchable between analog and digital. The > button to switch doesn't seem to do anything, though. > > -spencer > > On Mon, Feb 21, 2005 at 09:05:32AM +0000, Rui Nuno Capela wrote: >> >> BTW, shouldn't the US-428 have 8 playback channels, the US-224 have 4, >> and finally 2 for US-122? >> I took a quick look into Karsten's original jackd usx2y_driver code and... I'm affraid that the number of channels were being hardcoded as 2 for capture and 2 for playback. OTOH already in the current jack CVS trunk, the number of channels are either given on the jackd command line (-i,-o) or taken from the maximum allowed by the ALSA driver (via snd_pcm_hw_params_get_channels_max()). Maybe its around here where the issue is? Karsten? I could also check that the jackd usx2y specific code has support for no more than 4 capture and 2 playback channels. What happens when you start jackd explicitly for 4 input channels (-i4)? e.g. jackd -R -d alsa -d hw:N[,2] -i4 -o2 I'll remember to try this myself, when I get home. Take care. -- rncbc aka Rui Nuno Capela rncbc@xxxxxxxxx
