A/V problems while the Pi is doing nothing

Jim Diamond snipped-for-privacy@jdvb.ca at 14.3.2026, 23:57:15 "A/V problems while the Pi is doing nothing" :

This problem occurs when there is a conflict with CEC. The Pi then disables CEC for HDMI. The TV get no Information -> Standard values that do not fit.

yes with xbmc/kodi

sounds like the TV is selecting overscan mode, does its remote have an aspect ratio button, there's usually an option for "exact scan" or "pc mode"

Hmmm... CEC conflicts are a new one for me.

The Pi and the TV are the only devices in the vicinity (and thus the Pi is the only HDMI input for this TV). Is there a possible CEC conflict in this case?

Jim

Nope, nothing "fancy" on the remote like that. For better or worse.

Thanks for the thought.

Jim

Typically the remote will give access to various menus on the TV. The necessary setting could be buried in one of those.

Yes, the TV needs a signal to informa pi that CEC is on, pi wants this signal but if no signal is detected the CEC is changed to "off".

There are some packages for CEC to start a cron to activate CEC again.

On my samdung it's in one of the setup menus

Thanks for the info. I'll try tracking this down and see if it has any effect. Unfortunately (maybe) the problem is quite sporadic, and I don't know how to trigger it, so testing whether something fixes it is more statistical than definitive.

Jim

I won't disagree about the "could be", but I've been through the menus a number of times and don't recall seeing anything like either of those. I guess the next time I feel like looking at menus for 15 minutes (there are a lot of them, and not arranged for efficient access) I'll take another look.

Cheers. Jim

Is there an FM that you can RT?

I didn't find any options with names like that, but buried 5 or 6 levels deep I did find some options that may keep the TV from changing.

One of them was something like "exact pixel" and the other was a setting for whether I wanted "full", "wide", and a couple of other choices. I changed them from "auto" and I'll see what happens.

Thanks again for that suggestion.

Jim

I've had the TV for a long time. But, as I recall, the manual was one of those things that told you how to plug the power into the wall, and what button on the remote you use to turn the TV on. In other words, information that you almost certainly already know. ;-)

Jim

So many menus, so little time...