My aunt has a samsung tv and newer Sony avr. She likes the CEC setting in the Samsung, but I was able to show her how by Disabling the feature in the tv, allowed all of her components to function better with her Harmony remote.
As her Samsung tv, kept trying to set the avr to the incorrect input, even after the Harmkny remote set the proper one. I hate the CEC feature, doesnt always works as it should.
Do yourself a favor, disable it, and grab a logitech harmony or suitable universal remote.
(R&L: Infinity Beta 50) (Center: Infinity Beta C360) (Surround Side & Back: Infinity IW ERS 210 x 4) (TM: Infinity IC ERS 110 x 2) (Sub: Def Tech SC1)
(7.2.2 Config.) (AVR: Denon 4100) (Audiosource Amp 110 for TM's) (BRP: Pioneer 80FD) (Display: Panasonic TC-P65S1)