I recently upgraded to a shiny new graphics card (NVIDIA 7900 GT) and was bummed when the DVI connection on my ViewSonic VA2012wb LCD monitor couldn’t detect a signal from it and just stayed in standby mode. At first I thought the card was just dead, until I tried using the DVI to D-Sub (analog VGA) adapter to send the monitor an analog signal, which worked fine. This mystified me, since the card and physical port were apparently working, but refusing to output a DVI signal. I’d just unplugged the monitor from my old DVI card, so I figured the monitor wasn’t the problem. Turns out the monitor was indeed (partially) the culprit.

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