i have two samsung tv's old one is led 19 and new one lcd 37
i have ati hd 6990 and i connected the 19 with normal cable next to pc and the other lcd 37 with 10m hdmi cable to my sleeping room
whenever i try to run a game the monitor on my sleeping room shut down and the one next to my pc runs fine
i meddled with ccc and found that option called preferred monitor
when i set it to the other monitor the one that is next to pc now shut down while the other in my sleeping room works fine
but i want them both to work together it's so annoying to go to options and change every now and then
Some games will allow the secondary to display normally, but others will not.
I think it is how the game is programmed to manage graphics, and perhaps the graphics driver itself.
What to do?
If you have integrated video adapters, you could try attaching your secondary monitor to that.
Or, if not, add a second cheap video card for the second monitor.
No guarantees, but I think if you use different adapters, it will work.