Is there a command line utility that displays all the capabilities in the graphic card and shows information about CEC functionality in my laptop?
1 Answer
Try the following,
sudo apt-get install cec-utils libcec-dev
and then,
cec-client -l
It should list the devices that support it.
Please check the link/answer from superuser.com for some more information,
source: https://superuser.com/questions/524759/determine-the-hdmi-controller-from-the-command-line