nVidia FX560, dual-digital outputs, XOrg working configuration

That should be a reasonable set of keywords to see in a search engine, don’t ya reckon?

Here’s what I’ve got, hardware-wise:

The nVidia FX-560 (datasheet) has a Dell 2407WFP connected to output #1, and an LG L1950-H connected to output #2. For both screens I’m using the digital input, which is the second after VGA.

I was having terrible problems trying to get the displays to (firstly) use the correct resolution, and (secondly) to get the 24″ to show up as screen 0 rather than 1.

One of the complications of the 19″ showing up as Screen 0 was that because it can’t do 1920×1200 (maxes out at 1280×1024) because of my other entries for the Dell screen this would limit the 24″ to 1280×1024 as well. Another problem is that in some circumstances starting Xorg would send both monitors into power-save mode. Not what I wanted at all!

A goooooooogle search (in one of my spare seconds in the office today) hinted that I could specify::

Option “UseDisplayDevice” “DFP-0″