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From: George Hartzell <hartzell@alerce.com>
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Date: Thu, 20 Apr 2006 15:47:55 -0700
To: Ariff Abdullah <ariff@FreeBSD.org>
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Cc: freebsd-multimedia@FreeBSD.org
Subject: Re: Odd code in sound/pcm/channel.c, help with PR?
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Ariff Abdullah writes:
 > On Wed, 19 Apr 2006 17:03:00 -0700
 > George Hartzell <hartzell@alerce.com> wrote:
 > >  > > 
 > >  > It's because the hardware DMA pointer is being lazy and need a
 > >  > good spank on its face.
 > >  > 
 > >  > Replace your sys/dev/sound/pci/via8233.c with:
 > >  > 
 > >  >   http://people.freebsd.org/~ariff/test/via8233.c
 > >  > 
 > >  > As usual, recompile your kernel, or just the modules. If this
 > >  > doesn't work, I still have few more other tricks.
 > >  > 
 > >  > Coincidently, I'm currently investigating DMA incoherency within
 > >  > few drivers, notably this and few others.
 > > 
 > > I think that you need to get a bigger stick.  I did a
 > > buildkernel/installkernel and still no sound when I cat to
 > > /dev/dsp0.0 and I still get the timeouts.
 > > 
 > Try again (same above link). Looks like we need to fabricate DMA
 > progress.

I still get silence and the same message when cat /etc/termcap >
/dev/dsp0.0.

g.