"When it comes to a multi-headed environment under Linux, there are two popular options for consumers -- Xinerama and TwinView. TwinView was developed by NVIDIA for allowing multiple monitors to be powered by a single GPU with their array of GeForce graphics cards. NVIDIA TwinView is also compatible with a wide array of displays from DFP displays to traditional television sets, and support remains unified with both Microsoft Windows and Linux. On the other hand, Xinerama was originally developed by DEC (Digital Equipment Corporation) under the name of PanoramiX, and was later incorporated into the X Window System as Xinerama. Not only is Xinerama compatible with NVIDIA solutions, but also is universal to all graphics cards with supportive Linux drivers and the X Window System -- including the ATI Radeon and FireGL series as of their v8.18.6 release..."
