Hey guys, I've been having a nightmare setting up three monitors on my Radeon R9 280X. After hours of research, trial and error, and more research I've decided to post on here hoping the experts (that's you lot of course!) might be able to guide me in the right direction. This is my last resort before going down the Active DisplayPort adapter purchase – quite expensive here in South Africa at R700 ($45). According to my research this should not be necessary but you never know with these cards which only has one DVI port and not the two you get on most 280Xs. Unfortunately from a product documentation standpoint this is close to non-existent from PowerColor so basically no support from them on this issue. Also I'm not that concerned about running full Eyefinity on all three monitors, just need all three to function to increase my work productivity. Card PowerColor Radeon TurboDuo R9 280X (http://www.powercolor.com/de/products_features.asp?id=512) Ports: DVI x1; HDMi x1; Mini DisplayPort x2 Monitors Samsung 920N – 19" Resolution: 1280 x 1024 Currently connected via: DVI to VGA converter, Samsung 2494H – 23.8" Resolution: 1920 x 1080 Currently connected via: on HDMI cable Dell SE2416H – 23.8" Resolution: 1920 x 1080 Currently connected via: mini DisplayPort to HDMI cable (http://www.ugreen.com.cn/product-610-en.html) Software wise I have the following scenario: AMD Catalyst – Application will always only pick up two monitors. Win 10 Display properties – Application will identify three monitors but no matter what combination you try it will always only extend to two and never to three monitors. Any help will be greatly appreciated! Thanks chaps!
You must use an Adaptive DisplayPort adapter "But make sure it is on AMD's list of certified adapters". I have run DVI + HDMI + Mini with Active on MiniPort http://support.amd.com/en-us/recommended/eyefinity-adapters
Seems like I sorted this out. Purchased an active mini DisplayPort to HDMI adapter. Not one from the recommended list though as I couldn't find any stock anywhere. So just a no-brand items but at least it works. I'm still not convinced that it has to be on HDMI, DVI and one DisplayPort though based on the results I read about from other users. Will play around to see if I can get this working on both DisplayPorts and DVI instead.