snd_ich dies

[TAMURA Kent]

> My audio dies, espcially when my system is under heavy load.
> Otherwise I can maybe play music for an half hour, (with choppy sound).

>     vendor   = 'Intel Corporation'
>     device   = '82440MX AC'97 Audio Controller'

440MX has a hardware erratum and an audio driver should have
special handling to avoid it.  The drivers of NetBSD and ALSA
does it, and FreeBSD's does not for now.

ALSA:
http://hg-mirror.alsa-project.org/alsa-kernel?cmd=changeset;node=e0d1f8060d20;style=gitweb

NetBSD:
http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=19919
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/pci/auich.c.diff?r1=1.33&r2=1.34

-- 
TAMURA Kent <kent_2006 at hauN.org> <kent at NetBSD.org>