Even if I do something on the PC with another screen
You probably have it
switch off in idle state option switched on look in settings below
Save energy
Then you have to switch this mode off… Behavior when closing the screen… Power management.
So it means that if you close the laptop, it switches to standby mode right? If so, then of course you can set that under Windows so that it stays on even when the notebook is closed. There's information here: https://praxistipps.chip.de/...lten_30876