Connecting an external video card using EXP GDC ​to Acer Aspire 5 A515-44g

VKam_Jleo

Hello Everyone! I have problem - black screen on the laptop monitor when I connect an external video card using exp gdc. The fans are spinning, video card is working, the keyboard is also working, but screen is black I tried to connect an external monitor, but it din't help. I also tried disabling the discrete and integrated video card in the bios. I used delays on EXP GDC like PTD, turned on ATX PW (the power supply of the unit and this station outside the laptop), the result is also zero Everything loads, works, but there is no picture
Do you have any ideas to solve the problem?
My laptop: Acer Aspire 5 A515-44g Ryzen 5 4500u