soundblaster awe64 (isa): full-duplex? [solved!]

Andriy Gapon avg at
Wed Apr 2 20:45:04 UTC 2008

on 02/04/2008 22:45 Andriy Gapon said the following:
> If I try to simultaneously play and record then playback dies.
> System info:
> $ sysctl dev.pcm
> s16le
> dev.pcm.0.rec.vchanformat: s16le

After reading a little bit on soundblaster 8-bit vs 16-bit DMA asymmetry
I tried the following and it immediately helped:
$ sysctl dev.pcm.0.rec.vchanformat=s8

Even skype works OK :-)

P.S. shouldn't sbc/sb16 driver be smart enough to set some like this for
itself as default ?

Andriy Gapon

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