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Date: Thu, 23 Oct 2003 17:57:01 -0400
From: Eric Pogroski <pogrose@twcny.rr.com>
To: dergachev@pochta.ru
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cc: freebsd-stable@freebsd.org
Subject: Re: CMedia CMI8738 on board; crackle sound
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On Fri, 24 Oct 2003 00:35:17 +0400
Dmitry Dergachev <dergachev@pochta.ru> wrote:

> Hi ALL!
> Sorry! I can't write in English very well!
> 
> 
> 1)
> #dmesg | grep pcm
> pcm0: <CMedia CMI8738> port 0xe400-0xe4ff irq 10 at device 19.0 on
> pci0 2)
> Mother Board
> Chaintech CT-7VJD with on board sound
> 
> What can you advise me?
> 
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Hi. I have the same chip on mine (Asus A7V333 w/ audio), and it gave me
the same problems.

I added these lines to their respective files, and the problems went
away:

/boot/loader.conf
hw.pci.allow_unsupported_io_range=1

/etc/sysctl.conf
hw.snd.pcm0.vchans=6
hw.snd.maxautovchans=6

kernel config has
device	pcm

Good luck!