Zaphod mode is still available. nVidia pushed its TwinView solution while everybody else was using either the Zaphod mode or Xinerama. I don't think TwinView on

Zaphod mode is still available. nVidia pushed its TwinView solution while everybody else was using either the Zaphod mode or Xinerama. I don't think TwinView on Linux allowed any dynamic configuration. So, when the rest of the world switched to the RandR extension, every graphic card was able to dynamically add/remove monitors while nVidia users were stuck with a subpar solution.