Well, I spent a day installing an Ubuntu 14.04 partiton and installing the latest AMD beta driver. Ubuntu is even more screwed up.
I ran amdcccle and made sure Xinerama was off. I ran 'xrandr --listproviders' and *still* get zero providers.
I stil cannot configure a triple display desktop. I can get two displays on one card to work as multi-display desktop with 2 displays but the third display can only be configured as a single display desktop.
When I restart the Desktop manager, the dual displays work but nothing displays on the third desktop.
If I turn on the Xinerama option, then all three displays come up but as soon as I start the desktop manager, something is hung and I cannot get any response from the desktop.