> I chased video glitches from my DVB setup for ages, and with a lot of
> help from the list, I finally nailed it. It was the Si 3112 SATA
> controller chip doing nasties on the PCI bus and corrupting the mpeg
> stream from the DVB card.
>
I've recently had a similar issue migrating to FC4 and a new 300gb SATA
drive. I was getting the same "poor reception"
on DVB when the SATA drive was working hard. I was able to confirm that it
was the SATA drive alone through experimentation under my prior FC3 set-up.
My motherboard (gigabyte GA-K8NS Pro) has two pairs of SATA connectors - one
pair near the edge of the card (and adjacent the outer most PCI slots -
where my DVB cards are) and another pair near the CPU socket. The pairs use
different SATA controllers - one a Sil3512 and the other nVIDIA nForce3 250.
I observed a vast improvement just by swapping to the pair furthest from the
DVB cards (nForce3). I still get occasional interference artefacts at times
of high IO - but I'm hoping to play with shielding to resolve this. The 2
controllers are pretty much right next to each other but the Sil3512
controller that serves the outside pair is also a little closer to the DVB
cards slots. I don't know whether proximity to the DVB cards or the chipset
is to blame for the interference.
Does anyone have any suggestions for effective shielding of either the cards
for the SATA controller/cables?
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