I've gotten Xdmx to work with KDE, sort of. KDE doesn't seem to see it as an xinerama setup, maximizing windows stretches them over both screens and so forth. The task bar does remain just on the first monitor however.
But I can handle those issues - I can just resize my windows and move them, etc. However, the text in the menus in various KDE apps seem to vanish, making them unusable after a time.
Can KDE play nice with Xdmx? Does KDE have xinerama-aware abilities, if so, how do I enable them and if I do, will it see Xdmx as a true xinerama setup and act as such? Is there a way to shoot a window to a screen/monitor, similar to how one can already shoot an app to a virtual desktop?