cec-ctl

List CEC devices

$ cec-ctl --list-devices

$ sudo cec-ctl -m

$ cec-ctl -S

cec-ctl [options]

cec-ctl controls kernel CEC (Consumer Electronics Control) devices. It provides low-level access to the CEC subsystem for monitoring traffic, configuring adapters, and sending commands.
This tool uses the kernel's CEC framework directly, unlike cec-client which uses libCEC.

--list-devices

List available CEC devices

Monitor CEC traffic on the bus

Display the CEC device topology

Use specific CEC device

Set physical address

Set logical address

Requires kernel CEC support (CONFIG_CEC). Monitor mode requires root privileges. Not all HDMI ports support CEC.

cec-client(1)