I just got an asus r9 390x and I'm having monitor issuses. I have 2 hd monitors flanking a ultra wide monitor with my tv off to the side. I can only get 2 of the monitors to connect at any given time. If I try to plug in another monitor while its on, it shuts off the video out to all displays. I've stopped focusing on the tv at this point and I'm just focusing on the monitors. I'm using 2 displayport to hdmi to connect the hd monitors and a regular displayport cable to the ultrawide. I bought an active displayport to hdmi adapter from the site listed below because I would need it anyway and I still dont have any luck when I replace that with one of the displayport to hdmi cables. I never had this issue with NVidia and all the cables are new. I can get any 2 of the 3 monitors to work at a given time but not all of them. Please help!
http://support.amd.com/en-us/recommended/eyefinity-adapters
http://support.amd.com/en-us/recommended/eyefinity-adapters