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Date:      Thu, 2 May 2002 03:40:30 +0100
From:      Jose Gabriel J Marcelino <gabriel@maquina.com>
To:        freebsd-hardware@freebsd.org
Subject:   Asus KT333 - all solved
Message-ID:  <20020502034030.B72555@devils.maquina.com>

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Hi,

Last time I posted on the list about my new Asus KT333 board I
complained that I was having an extremely irritating periodic 
sound crackle with any audio card I used, the builtin CMI chip,
an external Yamaha DS1 and a Creative PCI 128 card.

I've now traced this problem to the Asus Ipanel update setting on 
the BIOS. I have an Ipanel and use it to look at the fan
speed and temp of the system, so I had this setting to update the 
display every 16 seconds.

And around every 16 secs I got a crackle... Those went away when
I disabled the update timer and now I'm using the internal CMI
audio chip just fine and with good quality.

So to summarize, to make this board work well under FreeBSD:

- If running an Nvidia card and X locks up get John Baldwin's
  MTRR patch at: http://people.freebsd.org/~jhb/patches/mtrr.patch 
  apply it to the kernel, recompile and add the line:

  machdep.disable_mtrrs="1"

  to your /boot/loader.conf to disable MTRRs.

- Be sure to disable the IPanel Update Timer in the BIOS if you
  want to use any audio at all on this board (internal or not).

Now everything works just fine. Thanks to everyone who helped.
 
Gabriel

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