Re: VIA KT133A / athlon / MMX

From: Steffen Persvold (
Date: Mon Jul 30 2001 - 02:15:42 EST

Gav wrote:
> Just FYI, I've been running 2.4.7-pre6 for a few weeks on a Abit-KT7-a
> (hpt370) that uses the KT133/VIA chipset, with a 1.33Ghz Athlon and the
> kernel compiled for an Athlon.
> The machine is now rock solid. I've given it the usual tests, k7burn for 5
> hours, cp'ing 30G+ across drives a few times etc, and all is good.
> The broken sound (crackle/pop) with my SB128PCI (same problem as SBLive)
> still didn't go away though, but enabling PCI DRAM PREFETCH on the VT8363
> Bus-PCI Bridge does cure it. This took me a while to find as I can't set this
> in my bios, but powertweak came to the rescue.
> While DRAM Prefetch is supposed to be an option to increase performance, my
> sound is totally unusable without this set. I've heard numerous people
> explain the same problem and it would be interesting to find out if this
> cures their sound troubles too. If this is the case, is this something that
> belongs in quirks, or is it too hardware specific? and would enabling this by
> default hurt anything anyway? Or is this just masking the underlaying problem
> ?

Hmm, I think "DRAM Prefetch" is the one you _don't_ want to turn on, because (and correct
me if i'm wrong) it's causing all the problems with the IDE controller (data trashing).


  Steffen Persvold               Systems Engineer
  Email :     Scali AS (
  Tlf   : (+47) 22 62 89 50      Olaf Helsets vei 6
  Fax   : (+47) 22 62 89 51      N-0621 Oslo, Norway
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This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:42 EST