Hurry! After the raspberry pie is connected to the display screen, the other hdmi will not be able to connect!?

when I finished doing it with raspberry pie, I connected the 2k game tough player screen. Before, the notebook and ps4 were well connected. When I went home to open the computer tonight, I found that there was no signal input on the screen!
Raspberry pie still has such a strong function, can it ruin the display screen? Asked the merchant on the screen and told me to change to a 2.0 HDMI line!

now Notebook and ps4 are plugged in with no signal connection . Only when raspberry pie is plugged in will the interface of raspberry pie be displayed !

because I don"t have much hdmi at home, I went to buy a mixed-brand HDMI line before connecting raspberry pie. Is that the reason?

does anyone encounter this situation? Call for help!

Mar.14,2021

give me a Debug idea:

  1. all know that it is miscellaneous brand line, carry the pot
  2. look at the parameters, two HDMI ports, consider changing the interface and switching signal
  3. do not plug in the signal line. Although everyone supports plug and play, it is recommended to connect the cable first and give the signal later
  4. consider the monitor settings to be reset back to the factory
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