So I brought home a Dell Optiplex 760 from work for testing.... It has a Displayport out and we use Dp to DVI adapters, so i brought one of them home too... First off I went from the Dell to my Lg 24" 1080p monitor via Dp adapter to dvi and change the resolution up to 1920x1080 then disconnected from fp and plugged into Atlona to iMac... Sooo it's now Dell Dp>DVI>Atlona convertor>mini Dp>iMac it auto switched and worked right off the bat, but resolution dropped down to 800x600 with black border all around... So I turned it up to the highest 1600x1200 and it was stretched pass the screen where I had to move the cursor around to see the whole screen... So next I Cmd F2 back to OSx and then tried to go back into tdm and just went black and then back to OSx... So I unplugged mini Dp from back and then back in and it automatically switch to the dell but the res was back at 800x600... Didn't really solve much other than I found that the Atlona works with my 27's input but there's not a whole lot of hope lol ... Also, this makes me even more confused on its a scaling issue with the 360,PS3, Bluray, etc.
Let me hear everyones comments........
THANKS