After having found the hereunder attached message from Claw (many thanks!) in the Vertex thread I finally also found the solution to my long existing problem, the problem was already described somewhere earlier in this thread and also in the Integral 1 thread (since I own and tried both Integrals).
I have an ATV 4K with video settings set to 4K SDR 4:4:4 with Range / Match set to ON, it's connected to an input on my Denon AVR-X4200W. One HDMI OUT unfortunately got fried some time ago and therefore I needed a splitter to connect 2 display devices (both 4K), one is an Optoma UHD51 capable of 4K60 600Mhz HDR BT2020 and a Sony XBR-75X940E TV capable of 4K60 600Mhz DV (LLDV actually).
Setting the Integral 2 on Automix gives me erratic results such as washed out colours and wrong blacks on the Optoma after having watched DV content on the Sony TV , with the latter switched off. The Integral was still dealing with DV instead of HDR. The other way around gave me strange behaviour as well. The 2 displays are never used at the same time.
Now, after freading Claw's message and setting a Custom EDID for each display, it works perfectly.
100% reproducible each time I switch sources or content (ATV, OPPO, TV Decoder) and with any display.
Custom EDID 5: SONY A1 LLDV V2
for all content including DV and HDR ===> SONY XBR-75X940E TV
Custom EDID 11: 4K60 4:4:4 600MHz HDR BT2020 All Sound
for all content including HDR ===> OPTOMA UHD51(A) Projector
The question now is how to automate things through my Logitech Harmony whenever I choose to watch content on either display?
Both Custom EDID 5 and 11 are not listed in the commands, can I somehow add those? I only seem to have EDIDs 1, 14, 29 and 32 on my Logitech Harmony.
What steps should I take to get there?
If someone could help me with this, thanks a lot in advance!
Originally Posted by claw
Is this a newer LG 4K TV that supports HDR10, Dolby Vision, and HLG?
I had a JVC RS500 and LG B7A OLED connected to Vertex outputs.
If I wanted to output to both simultaneously, I configured the Vertex to Custom EDID 11 - 4K60 4:4:4 600MHz HDR BT2020 All Sound. This prevents a player from sending Dolby Vision which my JVC does not support.
If I wanted output to the JVC only, I leave it at the same EDID 11 and power off the LG.
If I wanted output to the LG only, I powered off the JVC and then switched to Custom EDID 2 - Custom Default (FULL + LG DV) so that players will output Dolby Vision.
I used Custom EDIDs because I found Automix would sometimes fail if I turned on my LG while my JVC was already displaying HDR10 content. Or turned on my JVC while my LG was already playing Dolby Vision content. The failure that sometimes occurred would be my JVC reporting either an Invalid Signal, a Pink screen that indicated it was receiving Dolby Vision, or a Black screen with horizontal static-like lines which meant I needed to restart the JVC; something I don't like to do.