Looking for hints to get DVI working into a 1905FP. Anyone have theirs working with an Nvidia FX 5200 card, or another FX 5nnn -based card?

I purchased a 1905FP two weeks ago and have been unable to get it to work with DVI from my system's Nvidia FX 5200 video card. The monitor does not recognize any signal (flashing amber light) on the DVI port, whether in boot up or after WinXP drivers take over. It works fine off of the analog VGA output. Yes, I know about switching monitor inputs, etc.

In addition to many hours I've spent researching and testing, I've spent several hours on the phone with Dell tech support. Have tried the "dvi recover" utility with their assistance, no change. Because of this and another HW mechanical issue on my sample, to Dell's credit Tech Support did send a second 1905FP which has the identical DVI symptoms in my configuration. (It did correct the other mechanical issue).

My system correctly finds and recognizes the monitor on the DVI port. Using DVI-reading software I found on the 'net, I've verified that the DVI status identification (EDID) is readable and not corrupted (which was the original 1905 DVI power save issue). And the second display channel on my card works at least in analog mode driving another monitor. Unfortunately I don't have other DVI monitors to check my video card with, nor other systems which output DVI.

Given various problem posts on Dell and other forums on DVI and many different video cards, I suspect there might be a compatibility issue between the board and monitor, even though both likely work in some combinations.

FWIW, other system details: HP media PC (P4 3.2G), Asus 9520 Nvidia FX 5200 card, XP MCE 2005, multiple Nvidia driver versions tried from 56.nn to 81.nn. Using DVI-D cable supplied with 1905FP.

Thanks for any hints!