Hello all, I recently started getting into 4k movies and realized my tv can't really observe 4k. Since bandwith is just too low with 100Ethernet ports, I tried making USB 2.0 work. Unfortunately almost all adapters nowadays use USB 3.0, so I couldnt make that work. It was really buggy when I tried. My last solution was to use a Xiao mi Box S which is a fantastic device and instantly worked. Unfortunately, i now have 3 Remotes and i dont want to switch around all remotes. CEC sounded promising but it doesn't quite work... it works when my tv is turned off, then both on buttons turn on the tv/mi box. But when turning it off, only my TV remote turns off the mi box. Unfortunately my Mi Box remote doesn't turn off the tv. My modell is the 55ep680. It says it fully supports cec on the product page. Any idea as to what i can try? Maybe some kinda android tv debugging? Perhaps i can analys some logs.
TCL TVs are shit (source: I own one) nothing works as it should.
Edit: I should be more helpful. For me, using NVIDIA Shield the Volume works via CEC using the TV remote and controls the AMP. Power off works as yours does. TV remote will turn shield on/off but shield cant turn the TV on/off. I guess that's not helpful except to say my experience is consistent with yours and I doubt it's the MiBox at fault. Everything worked perfectly with my old Panasonic Plasma and the shield.