by
Moster » Sun May 10, 2020 9:26 pm
I have the same problem. Baught a Nanopi-M4 (not the V2-version). Several tries with distros Ambian and lubuntu. Additional installation of cec and cec-utils. With "cec-client -l" there can no cec be found.
Additional try with libreelec shows the correct loading of cec-parts, but no cec-hardware can be found.
Searching in the datashest of the M4-board shows that cec is implemented in the hardware. The signal goes from the HDMI-connector stright through ESD-Protection IC and a levelshifter transistor to Pin AD7 of the CPU RK3399.
For that cec has to be functional in theory.
I hope the designers of that board have an explanation.
On the other side the M4 has some advantages like RTC, emmc, cpu on the backside. But also some disadvantages.. no functional cec, no boot from usb.