sound patch for pop & crackles

matti k matti at
Thu Nov 13 02:45:07 PST 2003

On Wed, 12 Nov 2003 13:36:31 -0500
Mathew Kanner <mat at> wrote:

> Hello All,
> 	Could people experiencing pops and crackles try the attached
> patch and set hw.snd.fragps=128.   This patch also fixes select on
> vchans.
> more details in
> 	Thanks,
> 	--Mat

I applied the patch to /usr/src/sys/dev/sound/pcm/channel.c but am not
sure how to set hw.snd.fragsps=128. In my confusion I put it in
/boot/loader.conf and rebooted. However, sysctl hw.snd.fragsps gives
me sysctl: unknown oid 'hw.snd.fragsps'.

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