What display are you using? 120 Hz LCD with shutter glasses? I assume a Quadro video card with the 3-pin stereo output connector.
I'm driving it with an A4500, on Linux (openSUSE mainly), 3-pin to the USB emitter, with glasses. The A4500 is somewhat gimped because only the 470.xx driver works. With the newer drivers X11 detects the display and emitter but displays both frames simultaneously. I think it might have something to do with the stereo declaration in the xorg.conf file being different with the newer drivers, but I'm still chasing down that lead.