HDMI LCD Output on Beagle Bone (Xrandr)

Hi,

I am trying to output display via HDMI on my beagleBone. The LCD I have is this

http://www.amazon.de/gp/product/B00UIZSNQK?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00

I can force output on this LCD via the HDMI port of my Laptop via xrandr.

However when I connect HDMI of this LCD with the mini-HDMI of the Beagle Bone. I can’t see display or even force display.

My xrandr always shows “cant open display”.

Does anyone have experience with this ??

Regards

xrandr -display :0.0 -q

Regards,