I know for sure that it worked a few weeks ago, already with a LE 10 version Since then I had the Raspi 4 disconnected and switched off for a few weeks. Now I wanted to test it again. The micro to HDMI cable (no adapter) is connected to the HDMI port near to the USB-C connection. I guess this is HDMI0 while the other one is HDMI1? If I remember right, CEC was only working on HDMI0.
The other side of the HDMI cable is connected to my Yamaha AVR RX-V677. LibreELEC version is 10.0.2
After booting, I get the message that it is connected to Pulse Eight Adapter. But no key on my tV remote control is working. Same happens when I connect the Raspi directly to a HDMI port of my Samsung TV.
cec-client can't find a connection:
LibreELEC:~ # cec-client
No device type given. Using 'recording device'
CEC Parser created - libCEC version 4.0.7
no serial port given. trying autodetect:
path: /dev/cec0
com port: Linux
opening a connection to the CEC adapter...
DEBUG: [ 64] Broadcast (F): osd name set to 'Broadcast'
DEBUG: [ 64] CLinuxCECAdapterCommunication::Open - m_fd=3 bStartListening=1
ERROR: [ 64] CLinuxCECAdapterCommunication::Open - ioctl CEC_S_MODE failed - errno=16
DEBUG: [ 64] CLinuxCECAdapterCommunication::Close - m_fd=3
ERROR: [ 64] could not open a connection (try 1)
DEBUG: [ 64] CLinuxCECAdapterCommunication::Close - m_fd=-1
DEBUG: [ 1065] CLinuxCECAdapterCommunication::Open - m_fd=3 bStartListening=1
ERROR: [ 1065] CLinuxCECAdapterCommunication::Open - ioctl CEC_S_MODE failed - errno=16
DEBUG: [ 1065] CLinuxCECAdapterCommunication::Close - m_fd=3
ERROR: [ 1065] could not open a connection (try 2)
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I checked the settings of the CEC Adapter (Version libCEC 4.0.7 - firmware v0). What makes me wonder: There is a setting for the HDMI port number. The lowest number one can choose is 1. Shouldn't it be zero for HDMI 0?