Mine is pretty well the same as Sleepy's, the only difference is my background pic covers all 3 monitors.
I believe eyefinity engages when the control center loads.
So you're saying the control center isn't automatically detecting monitors. Obviously your vidcard is somewhat different with it's mutliple display ports, so for reference, in the control centre under Desktop Management/Advanced Display Settings/ USE Manual detection only is enabled.
I would guess the other setting.. detect whenever the control center is opened would function like what you're seeing.
#1: FX-6350, Antec Kuhler 920, MSI 970 Gaming, Powercolor R9 290X, ASUS Xonar D2X, GSkill (F3-14900cl9d-8gbxl), Antec Truepower New 750, Arc Midi, Win8.1pro x64
#2: MSI A88X-G45, AMD A10-7850K, Asus 5870v2, Antec900 case, AMD 2x4GB 2133 (R938G2130UK), Antec 750 True, 128GB Sandisk SSD, WD Black 1TB, Win8.1pro x64
#3: Athlon 64 X2 4200+, AGP 1950pro, Audigy 2, Asus A8V-D, 2gig ram, Enermax 465P. Now on Win8.1pro cat 10.2