Output Display problem

Hey, there Lovely people. I have a weird problem. The thing is when I’m trying to choose the secondary display as output it goes to my laptop screen instead of the external monitor.
As if Both my laptop screen and my monitor are the same.
Any Suggestion on fixing it?

Hey!

Sounds like you should go to System Preferences -> Display and uncheck Mirror Display

Hey. Yea that one i checked it was always on the extended display. The funny thing is that i have madmapper also running at the same time and it doesn’t​ have any problems with it