On Sat, Dec 01, 2007 at 06:33:35PM -0500, Tim wrote:
Takashi, after a week of testing your multi-plughw patch I'm satisfied it works fine.
One odd thing is that when I start Jack, sometimes I immediately get a series of ever increasing xruns, sometimes hundreds of them with each display update of QJackctl. Simply restarting QJackctl cures it and it runs for many hours without trouble. I am not convinced it has anything to do with your patch, maybe just my new .asoundrc and new altered setup.
It's a known problem with pcm_multi and qjackctl. qjackctl reports xruns that aren't actually happening when using pcm_multi. Some other apps like jamin do this too. Don't worry about it unless you hear dropouts (in which case the alsa driver will report a real xrun).
John