The PR kern/19435 "auich(4) hangs after few hours of playing" is
caused by a hardware erratum of 440MX.  The erratum is decribed
in [1] as "AC97 Soft Audio and Soft Modem Master Abort Errata."

A workaround described in [1] is to disable cache of buffers.
Do we have a standard way to allocate uncached memory on NetBSD?


[1] http://www.intel.com/design/chipsets/datashts/24505201.pdf

-- 
TAMURA Kent <kent2003@hauN.org> <kent@netbsd.org>