It has messed up mine, but have you tried looking for scaling options in your Catalyst Control Centre and underscanning it? This may not apply to you, but it worked for my TV screen.
After way too much I fixed this. I used DDU and removed everything. For troubleshooting purposes. I tried 15.7 again. No help.
I DDU'd again, and went back to the latest 13.x series. Problem resolved.
I then upgraded to the latest 14.x, which is where I was before 15.7. The upgrade went fine.
There is definitely something wrong with the 15.7 release.
I've upgraded to Windows 10, and this is still a problem for me with the latest 15.x drivers.
To add insult to injury, I have to go back to 13.x to get the resolutions correct per monitor.
And every couple days, I sit down and something has automatically upgraded me to 15.x
This is getting old. Real old.
So, it seems that windows 10 is updating my AMD drivers. With the new update methodology coming from Microst, there appears to be no way to stop this single update.
I wonder what it takes to get any feedback on this issue?
I found a way to block windows 10 updates, but it seems only good for a few weeks. Then Win10 installs these drivers,and my resolution is completely broken again.
Anyone from AMD have any input?