Monitor goes black randomly connected via 4-in-1 adapter and HDMI

[AlbanRampon]

Originally Posted by Alth

Hi, thanks for the reply.

Yes I am in a office with gas lift chairs.. how would that affect? I could try with another cable, and will update here again. Thanks for the suggestion.

I encourage you to have a look if the behaviour is really random or depends on when someone stands-up or sit down nearby.
These chairs are notoriously bad for electronics. Here is a paper published on the subject 23 years ago. I would advise using a better shielded HDMI cable. Your cable doesn't seem long enough to be the reason for the sensitivity, if you observe the temporary blink matches the chair gas compression/decompression.