Hi
Seems like in the 50-nvidia.conf file you need;
Code:
Section "Device"
Identifier     "Device0"
Driver         "nvidia"
VendorName     "NVIDIA Corporation"
BoardName      "Your Card Name"
Option         "AllowDFPStereo" "1"
Option         "UBB" "1"
Option         "Stereo" "10"
EndSection