Setup & Software Discussions
Problem with play in full screen on internal display

Problem with play in full screen on internal display  


New Member
Joined: 3 years ago


I have problem with play games in fullscreen on internal display. When I start game in window mode and switch from fake monitor to my internal desktop every thing is ok. But when I try switch to full screen or full screen windowed mode my game going back to fake display. 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts

Eminent Member
Joined: 2 years ago

Did you find a solution to this issue? @thallium

iMac Retina 4K, 21", Late 2015, Mojave, iGPU 6200
MBP Retina, 13", Early 2015, Mojave, iGPU 6100
Aorus Gaming Box GTX1080

Trusted Member
Joined: 3 years ago

I am pretty sure that the behavior described here is normal, unfortunately…

The so-called window-drag or fake-display method does allow you to play games in windowed mode on the internal screen but not in fullscreen mode.

There is a trick which consists of simulating fullscreen by using borderless windowed mode, but you may have to count with some performance hit doing so. The window-drag method was a lot used 2-3 years ago when eGPU-solutions for gaming on the internal screen of laptops with dGPUs were almost inexistant. Today, there are different solutions which are simply better (for laptops). Now, I don't know about iMacs...

I tested the window-drag method during my journey in this eGPU world some months ago. I share my experience in the thread below if you want some additional piece of information.

2014 15" Macbook Pro GT750M + [email protected] (AKiTiO Thunder2) + Win10

Impact of Turboboost on performances and fan noise level (MacBook Pro)