Hi guys, I am in the process of setting up two HD6990 cards for a videowall comprised of 3x3 1366x768 near-bezel-less monitors. The monitors are DVI displays connected via active MiniDP to DVI adapters. Since the HD6990 only has four MiniDP ports, the first eight monitors are connected on MiniDP and the ninth is connected on the second card's DVI port. The first card's DVI port is not utilised. The primary purpose of this setup is to play full-screen 1080p video. The controlling PC is running Windows 7 Professional (64-bit). The Catalyst drivers are version 11.12 (13th Dec 2011). Now, while I've managed to easily setup extended desktop over all nine displays, I cannot for the life of me get video to play across all nine displays as one screen. When you maximise the window, it will only maximise to that screen the video playback window is on. Full-screen mode also only operates on the current screen. I can appreciate that Eyefinity is intended to stitch together multiple displays into one big display, but as I understand it, this can only be done with up to six monitors and even then they have to be on the same card, AND they have to all be connected via DisplayPort, necessitating the use of a Multi-Stream Transport Hub (which don't appear to exist yet) to provide the fifth and sixth DP connections on the HD6990. Now since people have successfully had nine monitor displays running with games in a 3x3 config using tools like SoftTH (as evidenced by YouTube), is there any way to make a Windows 3x3 desktop appear as one giant screen to the system (perhaps even using SoftTH)? I thought dealing with Matrox's solution was bad (dumped due to lack of hardware video decoding on the card), but this one is proving to be a real PITA. Any help appreciated. June 2016 Update: The videowall has now been upgraded to an NVidia NVS 510 graphics card connected to three Matrox Triplehead2Go DP units. With the better driver support, it now runs Ubuntu Linux 16.04 LTS, uses the one GPU to drive all nine displays and happily plays 4K UHD 2160p video up to 60fps without breaking a sweat.