I'm having difficulty setting up my
![TripleWide :triplewide:](./images/smilies/icon_TripleWide.gif)
. I'm hoping someone here can enlighten me on what I am doing wrong.
Drivers Attempted so far:
- 15.7 - Fail
- 15.5 - Fail
- 14.9 - Fail
- 14.4 - Fail ( second test )
Last updated 2015.07.18
TLDR; I'm using an HD 7770 to drive three monitors. Two go through mini DisplayPort > HDMI cables, and the third goes through HDMI > HDMI or DVI > HDMI (I've tried both). For some reason, I can't use all three screens at the same time. Before you tell me my cables are wrong, please read the long version to understand my confusion.
Long Version
I have been using the Windows 10 Insider Preview for about 6 months. It was going great. I recently obtained my two additional displays for an eyefinity setup. I plugged them in, and easily set up my eyefinity desktop, with bezel compensation, and keyboard shortcuts for switching between extended desktop and eyefinity. At this time, I was using the WDDM 2.0 engineering sample driver.
I then booted into Linux (with open source drivers), which was all too happy to drive all three monitors.
A couple weeks later, AMD released Catalyst 15.7, touting improved performance, and enabling DirectX 12. I jumped on it, and when I rebooted, my eyefinity profile no longer worked. I was used to this, so I went to reconfigure my displays, but I could no longer use three displays. Only two at a time. I checked linux again, just to be sure, and had no problems.
Back to Windows 10. I uninstalled Catalyst 15.7 and reinstalled an older driver, (15.3 I believe). No good. So then, I chose to completely reinstall from the DVD. I figured there must have been a compatibility issue, since I didn't use DDU for 15.7, so surely it would work on a completely fresh install. Windows 10 instantly set up all three displays. I thought, "Great! It works again! Now for DirectX 12." I promptly downloaded 15.7 for Windows 10, and could no longer use three displays.
Oi.
So, from previous experience, I jumped straight to reinstalling Windows 10, and then realized I couldn't activate windows anymore. Microsoft has suspended any more activation of the Windows 10 Insider Preview. So I thought, well, I may as well install Windows 8.1 to reserve my windows 10 license. I promptly installed 15.7, and still couldn't use three monitors. So, I DDU'd and installed Catalyst 14.4, supposing an older driver would work better with my older card. No good.
I sat pondering what could be going on. On a whim, I swapped the HDMI > HDMI cable out for a DVI > HDMI cable, and lo and behold! Three monitors and eyefinity! YES! So, now that I had figured out the combo I needed, I decided to DDU and install 15.7 again.
Now I'm back to two monitors.
![Image](http://i284.photobucket.com/albums/ll36/Bigsteve87/Gifs/PissedComputer.gif)