jdoe

 But the funny part is that if I press twice blue to enable PiP, in the PiP window RT Doc is playing fine (of course no sound).

So main screen RT Doc is not working but the same channel in PiP is working.

I suppose that's because the PiP uses ANOTHER tuner.  The problem occurs when the SAME tuner attempts to switch from (MIS, 8PSK) to (normal , QPSK)

@Pr2:

After some more tests, I realized I do have your PiP problem, too.  But I think it is, actually, the same tuning problem I first reported.  The tuner seems unable to directly switch between 2 channels, one (MIS, 8PSK), the other (normal, QPSK).

I'm not exactly sure how this influences the PiP, but the channels that cannot be paired in PiP are the same as the channels that cannot be directly switched between (if that makes sense).

It's a pity, as I think this must have a software solution.  (Whatever state change I induce in the tuner when I go (MIS, 8PSK) -> (normal, 8PSK) -> (normal QPSK) can very probably be done via some driver manipulations.)

Maybe someone more knowledgeable (than me) steps in...

I have a Duo 4K with the same tuner as you mentioned and I don't experience this problem myself.

I have tested between the french channels on 5°W and channels on Astra 19.2E.

 

The only problem that I have is the PiP (Picture-In-Picture) that is not working between 2 MIS channels except for a few ones. The PiP screen remains grey.

Interesting.

I don't seem to have your PiP problem; it works by me.  If you have the disponibility, we could try to further pinpoint the circumstances of the bug(s).

My original report was based on (MIS) Italian channels on 5°W and English ones on 28.2°E.  I can also access 19.2°E.  The only limitation is that all channels have to be FTA.  So, if you give me a FTA MIS 8PSK channel on 5°W and a FTA, non-MIS, QPSK on 19.2° E that you can switch between, I can see what happens with them in my box.

My OpenPLi version is OpenPLi 7.2-release (2020-03-21-release-7.2), in case it matters.

Than you.

I am not using LCD4linux.