Prevent RPi4 from "co-starting" TV

Hi folks.

TL;DR – When my RPi4 starts, it starts the TV as well... is there a way to prevent this?

I’m running LibreElec 12.0.1 on a RPi4. The RPi is connected to a rather ancient Samsung TV (bought in 2011-ish…). Additionally, there is an HDD directly attached to the RPi via USB as storage. Said HDD is made accessible via SMB in my local network for managing its contents. When I’m not using it, the whole set-up is shutdown – because the RPi4 has no power management to hibernate it or something similar.

There are basically two scenarios:

1. I actually want to watch something using Kodi.
2. I just want access to the HDD for file transfer etc.

For case 1 everything is fine: As soon as I power on the RPi the TV is started as well, and I’m ready to go. For case 2 it is kinda stupid because I don’t need the TV and therefore I have to re-shutdown it manually myself.

==> Is there a way to prevent the RPi from “co-starting” the TV? For case 1 this would require me to start the TV myself, but I could do this easily by simply pushing a button on my remote.

Any ideas? Much appreciated.

Yes, I did check the CEC-adpater settings in the past because I was rather sure that the issue would be solved around there, but I did not find anything useful.

In fact, the solution actually is there - but sadly it's disguised behind some bad German translation. Picture for reference: deactivating the very first entry does the trick! Roughly translated back to English this entry reads "Upon starting announce Kodi as active source". There is no word about starting or powering on the TV or whatsoever - at least not for me.

My case 2 now works as desired. Case 1 got a bit more inconvenient than I expected because now I need to scroll down a quite long list of (unconnected) sources/devices on my TV before I can use Kodi - this is btw what I thought would be done by the first option in the settings. But overall this is still an improvement. Maybe I can work around that "scrolling through sources" inconvenience, too