black screen when I change hdmi source

[bartoszx]

Hi, I have Intel Mini-PC with hdmi output.
I have teamviewer installed on it. Mini-pc is connected to my TV.
Everything works ok untill I change hdmi source on my tv. My teamviewer mac client show black screen.
The same situation is also when I disconnect hdmi cable from box.
I can connect to my box but see nothing just black screen.
Any idea why?