Running Three Monitors Across Two Graphics Cards

Hello,

First time posting here, so my apologies if I’ve incorrectly selected the area for this thread (or if I’m reposting an issue that’s already been solved). I’m currently running a Dell Precision T7400 (desktop computer) with openSUSE 12.3. At the moment, I use two monitors connected to a Nvidia graphics card. I would like (if possible) to run three monitors with this computer; however, due to the lack of outputs on the Nvidia card, I’ve inserted a second video card into the PC (this second card is an AMD card) which I have this third monitor connected to. The command

/sbin/lspci -nnk|grep VGA -A2
returns the following output

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV610 [Radeon HD 2400 XT] [1002:94c1] Subsystem: Dell Optiplex 755 [1028:0d02]
Kernel driver in use: radeon
02:00.0 VGA compatible controller [0300]: NVIDIA Corporation G86 [Quadro NVS 290] [10de:042f] (rev a1)
Subsystem: NVIDIA Corporation Device [10de:0492]
Kernel driver in use: nouveau

So if I’m understanding correctly the OS is detecting both cards however, I get no video or signal information to the monitor that is connected to the AMD card. I’ve unfortunately had extremely minimal experience with openSUSE so I’m not sure if it’s even possible to run both an AMD and Nvidia card at the same time or if I’m missing something in the configuration steps (I know so far that I can not detect the monitor in the simple Display GUI setup of the system settings menu). I also believe I have all the correct drivers installed (xf86-video-nv for the Nvidia card) and (xf86-video-geode) for the AMD card. If it may be of any help here is the output of the xrandr command while all three montiors are connected.

Screen 0: minimum 320 x 200, current 3360 x 1050, maximum 8192 x 8192DVI-I-1 connected primary 1680x1050+1680+0 (normal left inverted right x axis y axis) 473mm x 296mm
1680x1050 60.0*+
1680x945 60.0
1400x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1440x900 75.0 59.9
1280x960 60.0
1366x768 60.0
1360x768 60.0
1280x800 74.9 59.8
1152x864 75.0
1280x768 74.9 59.9
1024x768 75.1 70.1 60.0
1024x576 60.0
800x600 72.2 75.0 60.3 56.2
848x480 60.0
640x480 72.8 75.0 60.0
720x400 70.1
DVI-I-2 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080 60.0 +
1680x1050 60.0*
1680x945 60.0
1400x1050 74.9 60.0
1600x900 60.0
1280x1024 75.0 60.0
1440x900 75.0 59.9
1280x960 60.0
1366x768 60.0
1360x768 60.0
1280x800 74.9 59.8
1152x864 75.0
1280x768 74.9 59.9
1024x768 75.1 70.1 60.0
1024x576 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
848x480 60.0
640x480 72.8 75.0 66.7 60.0
720x400 70.1