USB headset ... ?

Ulrich Spoerlein uspoerlein at
Thu May 18 17:47:35 UTC 2006

Alexander Leidinger wrote:
> Do a "sysctl -a | grep pcm". If the output is "hw.sound.pcm0.XXX" run "sysctl hw.sound" so 
> see a complete list of sysctl's available. Pick one of the "vchan" ones and change it from 
> zero to an arbitrary numer... e.g. 4 to be able to let 4 applications play at the same time.


> I think we should activate vchans by default... anyone with an idea of the number of channels 
> we should provide by default (warning: bikeshed ahead)?

Well, the Soundblaster Live! (snd_emu10k1) provides four vchannels in
hardware, ie., you don't need to set the sysctl manually. Thus, I'm
using 4 vchans on this laptop with snd_ich(4) hardware since day one. No
ill effect observed, and I think 4-8 would be an ideal range.

Ulrich Spoerlein
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