The DL and SL refer to signal processing - dual or single ‘channels’ of signal processing - and is a Cable issue. Here’s a single-channel DVI cable, and it’s set of pins separated into two blocks…
The Dual Channel DVI cable fills up the ‘space’ with more pins so I call it a “solid block of pins”…
This is a Response Time issue mostly, but early in flat-screen DVI development, there may have been some circuit boards that couldn’t handle Dual Signal Processing. I don’t think that’s true with any DVI-flat-screen in several years, though.
(I hope I haven’t confused these two - “Two blocks of pins is Single. One big block is Dual.” Could they possibly make things MORE confusing?!!)
But that’s not the issue for you… running two VGAs, one that’s converted from the card’s DVI. I’ve never tried that. I’ve done the exact opposite - converting the VGA into a DVI - and I’ve been using a history of ATI cards for those - from the 3000-series on.
Not the other way around, though. Sorry.
