The Input Signal Plus on my QN95B can't be enabled while connected to my PC (RTX 3090). By checking the option the screen turns dark. It works with my PS5 though so the HDMI cable can't be the issue (8K certified cable). All 4 HDMI ports are affected. Firmware is 1304, did a factory reset twice already.
Does anyone have an idea?
I have the exact same issue with the QN90B. My windows 10 PC with a RTX 3080 TI will not recognize the TV with Input Signal Plus enabled. And yes, I am using an HDMI 2.1 cable.
Has your problem been adressed/fixed? I got a fix for you, im just writing an article about it. Can you just check, if you connect the RTX to the QN95B, and you look real close on your QN95B, can you see the graphics but without any light (backlight completely deactivated)?