Hi there, just for the tracker, I recently agreed to slightly extend dwm's and dmenu's Xinerama support to query the mouse pointer for the default Xinerama screen to use, and using 0 instead as fallback if there is no pointer.
Thus xidx will be removed again. But with this mechanism it is possible to change the dwm main screen without restarting X, just restart dwm. Kind regards, -- Anselm R. Garbe >< http://www.suckless.org/ >< GPG key: 0D73F361