Hi, you will need to find the software and run an update. I'm sorry, I forgot where I downloaded it from, but search for mirrorlink 1.1 and you will find the links.
This needs a bump... its new technology in cars and must be explored!
I have a Galaxy S6 Edge and have the same problem with my Citroën C1 Airspace. I start of by switching on the mirror screen via the notification menu, connect the phone via USB to the head unit, then the phone goes blank and...