pyCEC not actually connecting to CEC-bus

[patrickstanley]

My goal: Setting up hdmi-cec in home assistant using a TCP client/server to control a remote TV connected to a RPi 4.

Where I am: Compiled and installed libcec. Can use cec-client to scan bus and manually issue commands. Installed pyCEC via pip. Launching via python -m pycec results in the following

2023-06-07 20:16:46,392 - pycec.cec - INFO - found a CEC adapter:
2023-06-07 20:16:46,392 - pycec.cec - INFO - port:     /dev/cec0
2023-06-07 20:16:46,392 - pycec.cec - INFO - vendor:   Unknown
2023-06-07 20:16:46,392 - pycec.cec - INFO - product:  0x0
2023-06-07 20:16:46,392 - pycec.cec - INFO - found a CEC adapter:
2023-06-07 20:16:46,392 - pycec.cec - INFO - port:     /dev/cec1
2023-06-07 20:16:46,393 - pycec.cec - INFO - vendor:   Unknown
2023-06-07 20:16:46,393 - pycec.cec - INFO - product:  0x0
2023-06-07 20:16:47,830 - pycec.cec - INFO - connection opened
2023-06-07 20:16:48,357 - pycec - INFO - CEC initialized... Starting server.
2023-06-07 20:16:48,358 - pycec - INFO - Serving on ('0.0.0.0', 9526)

I can use home assistant to issue commands which I see in the pycec log.

2023-06-07 20:18:31,681 - pycec - INFO - Received command 10:82:30:00 from ('192.168.2.2', 40672)

But nothing happens. While still running pycec, I can use cec-client to scan and read the bus, where I see nothing happening. It looks like pycec isn't actually finding and connecting to the bus, but I am not sure what to do. Any guidance would be appreciated.