My Sony TV recognises Volume (version 1.55 running on a Raspberry Pi2) on the HDMI bus and it attempts to control the volume of the Volumio player, but nothing happens.
Does anybody know if there is a CEC script / interface in Volumio to allow CEC to control the volume and the functions of Volumio?
Any pointers / links on how to enable or implement this?
A HDMI-CEC device (e.g. A/V receiver, TV) can be controlled via the tool “cec-client” on a RaspberryPi.
Vice versa a RaspberryPi can receive HDMI-CEC commands with “cec-client”.
It is also possible to use CEC ALSA Volume to control the hardware/software mixer of a DAC via HDMI-CEC.