Thanks Sam.
Devices are the same, but VIZIO updated the firmware of the TV yesterday. The problems started at the same time. This is suspicious because they mention some CEC changes in their release notes:
Update the Cast Shell to 1.27
HDR Certification for 2016 P and 2017 M and P series
Fix for casting DirecTV now app 30 second loop problem
Alexa Performance improvements
p65-e1 white line issue fix
CEC Auto Naming
Correction to blue screen when casting Spotify
General/overall system improvements.
Having said that, Denon and Shield TV continued to be CEC controlled without issues after the firmware update. Maybe some subtle changes that affect only some hardware…
No, I can’t make CEC control to work at all, excluding the receiver from the chain, using different shorter cables, etc… Nothing seem to work. Only once yesterday after a reboot it worked, but I wasn’t able to reproduce that again.
I’m new to OSMC, so I’m not sure when updates are released. Was there anything updated in the last 48 hours?