First, let me say I am mostly ignorant here but I still may be able to help. What do you want to play to the two cards? The same stereo stream? Two different stereo streams? 4 mono tracks of a single multi track recording? I see that in the thread, someone mentioned not being able to keep the cards in sync. I have seen that problem mentioned before but also that if your cards do word clock that this can be overcome iirc. I also see that someone mentioned jack and you seem to have always had trouble with it. Jack has alwasy been my friend. If I can find some time today ot tonight, I will try and run a jack test with two sound cards for you. One internal on my laptop and one usb. If you want to try the jack route, I would be happy to help out some. Try and catch me as zloc or zotz in #rivendell on irc.freenode.net ... all the best, drew On Thursday 27 September 2007 10:37 pm, Mark Constable wrote: > I've read this a couple of times over the years but it still > does not make much sense (to me)... > > http://alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html > > As a baseline, say I started with this, where could I go > from here to get an app (ie; Amarok) to play back out two > soundcards at once ? > > # cat .asoundrc > pcm.NVidia { type hw; card NVidia; } > ctl.NVidia { type hw; card NVidia; } > > pcm.USX2Y { type hw; card USX2Y; } > ctl.USX2Y { type hw; card USX2Y; } > > pcm.shared { > type dshare > ipc_key 321456 # any unique value > ipc_key_add_uid true > slave NVidia > slave USX2Y > bindings { > 0 0 > 1 1 > } > } > > --markc > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user > > !DSPAM:46fc690f310671410093335! _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
