[YaVDR] Tuner0 pixelization issue

Hello all.

I have a YaVDR ansible headless server with VDR 2.4.0. The tuner is DD Cine v.6.1. + 2 additional tuners connected to the main PCI-e card.

The server is providing signal to 4 clients in the house via VNSI and via Stremdevice-server.

Everything is working good except some weird effects.

When I use tuner0 i am always getting pixelization on some transponder (HD channels) on Bulsatcom.

Every single point of the chain from the sat dish to the DVB card has been extensively tested.

The LNB, the coaxial cables, F-connectors have been all exchanged to new. The satellite dishes has been re-aligned.

I have tested 4 different LNBs from different vendors and they all act the same. General Satellite, Invacom, Inverto Black, Televes they all have the same issue.

If tuner0 is locked to different satellite and I watch 39east via other tuner everything is fine.

As long as no client is connected to the server and I switch to Bulsatcom and tuner0 gets involved the pixelation begins.

Of course I thought that this is a hardware problem related to the DD Cine S2 tuner and I exchanged it to another spare one. The problem has not been saved.

Connecting all 4 cables one by one to a conventional DVB set-top-box gives a perfect picture with no pixelization on all cables so I am excluding a problem with the dish, LNB, cable or connector.

The log is clear with no obvious errors while I experience the weird pixelization.

If the problem cannot be spotted is there any way to disable tuner0 and prevent it to start once the server is rebooted.

I am ready to provide additional information for my setup if needed.

Thank you in advance.

BR

Alexander

Hello Stefan. I really do not know. How can i check this?

The YaVDR was build years ago following the official guide.

I believe i am using the kernel as no additional drivers has been installed by me.

Forgot to add the ubuntu version

Description: Ubuntu 18.04.6 LTS

Release: 18.04

Codename: bionic

Swapped all cables with different configurations many times. It is always tuner0 and not a cable problem. Obviously it is not the hardware problem in the DVB card as well as 3 different cards has been swapped and it is always the tuner0

Zitat von wirbel

Hardware is not excluded yet, as the pcie-spi bridge port0 was still in place on all tests.

If i understand you correctly you mean not the DVB card but the PCI-e slot on the Motherboard?

If this is the suggestion it might be excluded as I tested also on a a different slot and no change.

Zitat von wmautner

Still you can tie the better of the SAT tuners to some channels by using the CAID field in channels.conf.

Unfortunately this only works for "free" programs.

Unfortunately not possible as the said programs from the transponder are not free.

I can confirm that the problem is not due to descrambling. Checked many times with different dvb set top boxes and no problems with neither of them.

I believe somehow VDR is not handling well this specific transponder and I am not really sure how to start a debug mode via yavdr console so that I can be more specific with the problem.

Thanks very much for your input though.

Thank you all for your suggestions.

For the moment I solved the problem by totally disabling tuner0 (with vdr-plugin-dynamite) and adding one additional duoflex add-on card.

Now I have perfect reception.

Zitat von wmautner

...and that topic is just "half-legal" and won't be discussed here further.

I understand this and it is not a topic I wanted to discuss either first because I am paying subscription for all my cards to the operators and second because it was not a descrambling issue at all. Somehow my VDR was not using properly tuner0.

I performed some additional test this afternoon. Installed a test system based on YaVDR ansible with the same DVB tuner and all of them (0-3) are working normally.

Start to think that there is something wrong with my production VDR running on VM environment.

For the moment the problem is solved and I am not going to investigate further.

I would really like to thank you all for the help.
Best regards.

Alexander