I, too, am facing this issue with Eyefinity. We have 3 Eyefinity cards (PowerColor HD7870), and each time I boot the computer, the displays are assigned a different number. It seems somewhat random as to which display gets which number. If one of the displays in an Eyefinity grouping (as opposed to a single extended view not in a group), it will lead to that group being disabled and each display in it will either be disabled or mirrored.
Saving a preset does not help me, either, because it will not restore them properly, probably because the numbering changes.
I don't know how to proceed on this, so I appreciate any ideas. I had the problem with Catalyst 13.4 and also with Catalyst 13.6 beta.
See my system specs below.
Driver Packaging Version: 13.101-130604a-158071E-ATI
Catalyst Version: 13.6
Provider: Advanced Micro Devices, Inc.
2D Driver Version: 8.01.01.1317
Direct3D Version: 9.14.10.0972
OpenGL Version: 6/14/10/12337
AMD Catalyst Control Center Version 2013.0604.1838.31590
OS Name Microsoft Windows 7 Professional
Version 6.1.7601 Service Pack 1 Build 7601
System Type x64-based PC
Processor Intel(R) Core(TM) i7-3960X CPU @ 3.30GHz, 3301 Mhz, 6 Core(s), 12 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 4.6.5, 1/18/2012
SMBIOS Version 2.7
Locale United States
Hardware Abstraction Layer Version = "6.1.7601.17514"
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 16.0 GB
Available Physical Memory 13.5 GB
Total Virtual Memory 34.0 GB
Available Virtual Memory 31.1 GB
Page File Space 18.0 GB