Try awesomeWM, the multi monitor support is great, it works with pretty much every setup I've tried from xinerama to multiple xorg servers/screens. The config i

Try awesomeWM, the multi monitor support is great, it works with pretty much every setup I've tried from xinerama to multiple xorg servers/screens. The config is all lua and can be a bit annoying but overall I've found it to be the best setup for multiple monitors.