I tried moving my hard drive from a motherboard that only had one GPU to a motherboard that had three GPU's plugged in.

I did the sudo aticonfig -f --adapter=all --initial and rebooted, I also deleted the .bin file in cgminer's directory.

CGminer gave an error about the number of devices not matching. It saw three devices, but OpenCL was only seeing one?

Where else does OpenCL know about the number of video cards besides xorg.conf and what else should I have done besides running aticonfig?

The system was build with these instructions: https://github.com/kanoi/linux-usb-cgminer/blob/master/linux-usb-cgminer