Hi,
EDID, yes...
So here's the problem:
There are 4 x DP, 1 x DVI-I and 1 x DVI-D on each of our HD7970 cards (we have two of these servers). We also have 12 VGA projectors expecting UXGA (1600x1200).
Using Startech DP-VGA converters work perfectly for the first 4 outputs, but both of the DVI's have difficulty. All the DVI-VGA adapters including passive and active seem to limit the VGA signal to 1080p except the Lindy active DVI-D to VGA unit. This works fine on the DVI-I output, but as soon as it plugs into the DVI-D it kills all six outputs and Windows sees 6 x 640x480 default displays. We have tried using a DVI-Parrot on the various combinations of adapters but don't get further than outputting 1080p. This is why I decided to try out this MST hub. The advertising suggests it can output three streams of VGA with standard VGA adapters (no mention of EDID managers) - as all my other DP ports function as intended I had hoped I wouldn't need to invest in 6 parrots.
Anyway from your suggestion I have tried Parrots on the DP ports and still the Windows display sees 3 x 640x480 displays. I bought two hubs, both with the same issue.
Have I any other options?
Thanks,
Joel