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Subject: Re: Mild sound distortion with FreeBSD 5.3-BETA7
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On Thu, 21 Oct 2004 11:25:56 -0700, Doug White wrote:

> Problems with sound disruptions can usually be traced to running with
> WITNESS and/or INVARIANTS compiled into your kernel. These debugging
> options cause enough interrupt latency to cause sound problems.  Even
> setting the sysctl debug.witness_watch=0 (I guess its
> debug.witness.watch=0 now) will usually clear the issue right away, or
> reduce the disruptions significantly (for that boot only).
> 
> If the sysctl doesn't exist then you don't have WITNESS.

I'm experiencing the same problem, and my kernel lacks WITNESS &
INVARIANTS.