I use this monitor with two different computers, one is connected to the monitor via usb c dock and VGA, the other directly with a display port cable.

When I switch from one computer to the other (shutting down one and turning the other on) the screen will enter this infinite loop where, I guess, it tries to connect to the display port, takes too long and goes to sleep, then it notices that there is something connected and tries to connect again, but can't.

Here is a video with the behavior: https://youtu.be/O7zhu95gzsI

Turning the monitor off and on again doesn't help.

The only way I managed to make it work easily is by disconnecting.

This happens with other combinations of computers as well.