Installed Windows 10 today and Catalyst 15.7.1. I have a Radeon HD 6900 series.
I previously had Windows 7 and 8.1, which both worked fine with my setup:
I have 3 monitors, all 1080HD - my main one (Iiyama - DVI), secondary (LG in portrait - DVI) & TV (Panasonic through Onkyo TX-NR609 - HDMI).
I can only have 2 at a time, so would disable the LG and extend to the TV to watch BluRays etc.
Now the TV is not displaying at all. Also when I disable the LG and extend to the TV, it keeps the portrait setting rather than remembering its own settings.
I'm guessing HDMI output is what is not working primarily. Anyone else having similar issues?