OK huge progress update
zI got something to work right it seems:
At first the display on hdmi is detected somehow: http://i.imgur.com/lJ9r1.png
After messing around the display was detected: http://i.imgur.com/TAo9V.jpg
Now when I click extend display display on both monitors I get the error: http://i.imgur.com/TaV0g.png
The second monitor(acer) is all black, no display on it whatsoever, just a small message on the monitor saying; Cable not connected". If I try to move the display to screen 2(acer) nothing happens.
Damn now I am truly lost.