[LAU] Horrible number of xruns in Jack (Emu card)

Ctirad Fertr phanatic at volny.cz
Tue Jan 29 07:38:32 EST 2008

Dne Monday 28 of January 2008 05:34:40 Darren Landrum napsal(a):

> Trying to run JACK at 44.1khz, at a 128 sample buffer I'm getting on the
> order of 50-60 xruns a second. Even at a 4096 sample buffer, I was
> getting one xrun every 2 seconds. I would think this setup should be
> able to handle a 64 sample buffer without any trouble.

What devices do you use for capture and playback? The most suitable setup for 
jack is hw:0,2 for capture and hw:0,0 for playback. Also make sure that your 
samplerate in jack matches actual samplerate (see alsamixer). 

> The one caveat is I did have to compile the latest stable ALSA from
> scratch, so that my sound card would work. Could it be related to the
> still-beta driver for my Emu card? Or maybe I need to recompile ALSA
> with some options?

Any recent alsa (1.0.15 and up) should work well. I have had 1212m nad now I 
have 1616m cardbus. Apart from missing 24bit playback, higher samplerates and 
some bells and whistles, these cards work pretty well with alsa. 


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