On Wed, 8 Dec 2004 23:15:10 +0100, Christoph Eckert <mchristoph.eckert@xxxxxxxxxxx> wrote: > Hi, > > > It is possible via an .asoundrc but you wont get it to work > > with jack without xruns. xruns are when one soundcard needs > > its new data (for playback) before the other card. It > > happens because your soundcards won't run with _exactly_ > > the same frequency altough all clame to to 44.1kHz/48kHz. > > short question: Is this also the case, if I have three cards > but only one is used by jack? No. This is not a problem. I have 2 or 3 cards or chips in most of my machines. Jack just sync's to one and the others do not matter. > > I also get xruns with my USB card. It's the third card, > because I have an AC 97 and an USB2MIDI device. > > When I try to run jack, it works, but I get some (but not too > much) xruns. Should I disable the AC 97 card? While I cannot speak too much about USB audio as I don't use it I was able to help one individual the other day get rid of his xrun problems. The newer kernels, 2.6.9'ish, along with patches for low latency, allow you to set the interrupt processing of the sound card to be non-threaded and therefore of higher priority in the machine. This will give you a definiate leg up on getting rid of xruns whether using USB as he was or PCI solutions as I do. Good luck, Mark > > Thanks & best regards > > > ce >
