<br><font size=3>> I chased video glitches from my DVB setup for ages,
and with a lot of<br>
> help from the list, I finally nailed it. It was the Si 3112 SATA<br>
> controller chip doing nasties on the PCI bus and corrupting the mpeg<br>
> stream from the DVB card.<br>
><br>
<br>
I've recently had a similar issue migrating to FC4 and a new 300gb SATA
<br>
drive. I was getting the same "poor reception"<br>
on DVB when the SATA drive was working hard. I was able to confirm that
it <br>
was the SATA drive alone through experimentation under my prior FC3 set-up.<br>
<br>
My motherboard (gigabyte GA-K8NS Pro) has two pairs of SATA connectors
- one <br>
pair near the edge of the card (and adjacent the outer most PCI slots -
<br>
where my DVB cards are) and another pair near the CPU socket. The
pairs use <br>
different SATA controllers - one a Sil3512 and the other nVIDIA nForce3
250.<br>
<br>
I observed a vast improvement just by swapping to the pair furthest from
the <br>
DVB cards (nForce3). I still get occasional interference artefacts
at times <br>
of high IO - but I'm hoping to play with shielding to resolve this. The
2 <br>
controllers are pretty much right next to each other but the Sil3512 <br>
controller that serves the outside pair is also a little closer to the
DVB <br>
cards slots. I don't know whether proximity to the DVB cards or the
chipset <br>
is to blame for the interference.<br>
<br>
Does anyone have any suggestions for effective shielding of either the
cards <br>
for the SATA controller/cables?</font>