lattepanda 3 delta lcd Connection question

Hi I'm trying to connect a 3.5" 320X240 display to the Rathepanda 3 Delta with mini hdmi, 

but the screen won't send out. I thought the display was broken,

 but when I connected it to the laptop, it worked well What is it??
 

The power says 5w and I tried connecting the power of the display with usb on the latte panda, and I also tried connecting it separately.

When connected to the laptop, the screen appears to be the default for sending replications 

I want to change it by connecting two displays, but it is impossible because there is only one hdmi

Is there a way to fix it??
 

My hypothesis is that the default window quality is 1920x1080, so the 320X240 display doesn't seem to work

:)