Hi, i have a Xiaomi notebook pro i5 8225u version with 8go ddr4. I do successfully installed macOs HighSierra with Windows 10 as dual boot on 2 separate ssds. On macOs everything working well, i only have some minor bugs but nothing really annoying, except that : i tried to plug in and use my external screen with HDMI port, but when i plug it, my laptop screen turn off and only my external screen is working. When i remove the HDMI cable, my screen is still black, I can't do anything but restart my computer. My external screen is successfully recognised in my settings, I can use my laptop on my external screen when plugged in, but i would like to use it as a second screen not as my primary one. Could you guys help me please, thanks.