From owner-freebsd-current@FreeBSD.ORG  Mon Dec 13 05:05:08 2004
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Date: Sun, 12 Dec 2004 21:05:08 -0800 (PST)
From: Doug White <dwhite@gumbysoft.com>
To: Michal Varga <varga@stonehenge.sk>
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cc: current@freebsd.org
Subject: Re: FreeBSD sound distortion problems with SB Live! fixed with
 PREEMPTION
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On Sun, 12 Dec 2004, Michal Varga wrote:

> irq22: pcm0                     74738345        248

Thats a lot. What are you doing to that poor thing? Try rebooting with

hint.apic.0.disabled="1"

in /boot/device.hints or /boot/loader.conf and see if that starts sharing
an interrupt with something else.  There's been problems of late with
"shadowed" interrupts from one device showing up on two IRQs at once.
The reason is complicated but gets near "PCs suck and its all Windows 95's
fault." :)

What do you have 'sysctl hw.snd.targetirqrate' at?

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org