I'm having problems with eyefinity. I was glad once I read that a dp->vga worked so I wouldnt have to spend $100 for an active dp->dvi converter. After it arrived, I was happy it worked but soon problems followed. Here are my monitors, I have 2 Samsung 2253bw hooked up through DVI, and a Samsung T220 in the vga->dp port. My setup is that my main monitor i use is the one on the very left, then 2 on my right. I'll show you a picture of my setup quick to give you an idea.
I would occasionally get the link failure. Sometimes when I try extending to the other 2 monitors, my T220 would only display at resolution of 640 x 480 and I won't be able to change it. Only way I can get it to work is if I disable the 3rd monitor, unplug n plug the dp-vga then re activate it. Then I can do eyefinity (5040x1050) and games would run fine. If I disable it, I won't be able to get it to work again until I restart my computer. I haven't tried plugging different ports/monitors yet. I'm debating whether if this problem is my cable, or my dp-vga converter, or just a general problem. I'll try flashing my bios later if that helps, but any help would be great.
I have XFX 5870