They should work out of the box with the official image (8.0 is latest) - if not pls send a dmesg | paste maybe some trivial error (missing firmware ...).
So I updated my LibreElec HTPC to the official version 8.0 and everything works fine (I really like this new skin).
Unfourtunatly my DVB-C adapter is no longer recognized by LibreElec and TVHeadend. I will attach the log of my system to this post.
I hope this error can be fixed easily because I really need the TV functionality for my LibreElec PC.
Greetings 4Style