Not too long ago I went ahead and finally made the jump to Ubuntu, which lead me to spend several hours on google trying to find why my previous video card wasn't working, but with only one monitor. I came to find out it was blacklisted, so a couple hours later I finally decided to get a Radeon R5450 based on user recommendations for my standard dual screen setup.
However I noticed the card has 3 ports. VGA, DVI, and HDMI. So I said bump it let me try out 3 monitors I've been wanting to scale for a bit. So the monitors on the DVI and VGA work as expected, the one on the HDMI however not so much, I swapped the monitors around they all work its not just that monitor, just seems the port isn't putting anything out.
I've seen posts where people claim they have the same card as mine and use a triple head setup, so I am wondering how they pulled it off as they don't specify that part.
I have Ubuntu 11.10 currently. and a ATI Radeon R5450 card. Any ideas? Im at a loss.