Originally Posted by Wizziwig
I updated the steps to get Vertex ARC working in my post above. Was able to simplify it slightly but it's still a pain. I suspect this procedure is required to reset or re-establish handshake with the Vertex every time the TV is powered on.
You can choose to blame the TV manufacturer if you like but the fact is that ARC is working fine on this Sony TV with both my Denon Receiver and cheap ViewHD ARC audio extractor I picked up on Amazon. Neither of those devices requires me to touch anything on the TV. I just turn on the TV, start the streaming app, and I have working ARC audio every single time. Only the Vertex requires I jump through hoops to get it working every time I turn on the TV. That tells me you have some compatibility or handshaking issue that could be improved with both Vertex and Integral. If you would like to continue working on this for a future Vertex firmware update, please send me a PM and we can go from there. Thanks.
TV manufacturers should be blamed when they deserve to be blamed, and talking about ARC/eARC implementation there is a lot to say, like brand new C9 owners having to wait Q2 2020 promised update to get LPCM working.
Anyway, the issue you mention here might come from recent update, so I would check older firmware version, there might be something broken for ARC on latest one as unit memory being full it has been a fight for freeing resources on all latest firmware.
We will check it there too in the next days.
This being said, keep in mind that in ARC, TV have the lead, so it's TV that decides when to negotiate ARC and when to release it and our devices deal with way more complex situation than what you described above and in a different way.
Because in our situation we have to manage between sound exceeding ARC limitation that user "intend" to route to AVR via HDMI and sound within ARC bandwidth that user can route back from TV.
If I recall well that was a FW addition at some point, so in your case, you prolly need older firmware that does not try to balance between hdmi input and TV ARC (and apparently made hdmi input mandatory), so you can use it for ARC only.
The root cause is that no matter what the situation is, TV request ARC and vertex complies and that’s it
Then if hbr bitstream coming to tv tries to get routed back and of course won’t work via arc
Means user is expecting that hdmi input sound is played but tv decided otherwise
Then once you make a manual input selection once then tv and vertex are back in sync and issue disappears
Manual input selection is either selecting source using tv remote via cec or choosing vertex input
Issue is present only if the hdmi input is hbr bitstream. Because all other can be routed back via arc then customer doesn’t see any issues even in startup
For this reason on new generation hardware the webserver have options for arc routing. You can force the input audio even if tv requested arc but none of that is very convenient because then audio is stuck to hdmi input always
And user must always choose once what he is watching in powerup if using arc
Earc does not have the issue (except for lpcm multichannel in Lg since lg doesn’t work for routing it back yet)
It’s just that tv requests arc whenever it sees a logical address of audio system
Nothing we can do there
If we had configured input audio at that point it will get overridden by tv
What happens is very normal and logical.
The entire system cannot know what user is intending to do
Normally all is good because input audio is not hbr
But when hbr then system fails
Same thing is a problem with avrs that's why they have input selection.
EDIT: Just checked and yes there is an issue in ARC on latest FW, will push an update using latest Diva/Vertex2 routines once we managed to free some memory resources.
EDIT2: See PM, sent test FW