to my opinion there are 3 dependencies:
- Your tv has to be activated for cec support
- your hdmi cable must support CEC. not all do.
- i think there should be a linux device /dev/cec0
( if you have access to your mld via terminal in webif (webinterface of your mld. Just check by typing
ls /dev/cec*
should give an answer cec0
)
cannot check myself, using x86 without hdmi