That's a little bit of bovine excrement on Denon's part. The EDID is not negotiated. The C9 sends it to the Denon, the Denon butchers it by tossing any video related stuff it doesn't know about and replaces the audio portion with its own. The ALLM flag in the EDID makes it across no problem.Question about my new (to me) C9 77" and instant game response.
I had a 65” C9 in my basement that I replaced with a 77” C9. With the 65” C9 the instant game response notification would pop up when playing my Xbox one x. The Xbox is hooked up to a Denon x3600. Nothing has changed in the setup except the TV. I have HDMI deep color and instant game response turned on in the TV settings. It worked fine before with the Xbox > Denon > 65” c9.
I contacted Denon and this is what they said:
"That has to do the new C9's EDID (Extended Display Identification Data) not negotiating well with the Xbox when going through an HDMI repeating device like the AVR. As you already know the X3600H supports ALLM and worked with the prior C9. To have the new C9s EDID altered please contact LG and report the issue so they can address it with firmware to the newer C9."
Has anyone else had issues with instant game response using an AVR? Any help would be appreciated!
Nothing has changed in the EDID for video after the HDMI 2.1 FRL stuff was added. So there is nothing for LG to fix and my X6500H passes the ALLM flag in the EDID no problem.
That being said, have you updated the C9 77" to the latest firmware?