Help with HDMI_CEC

Hi, I’m a huge fan of HA but i’m facing an issue with hdmi_cec.

I’ve installed lib_cec and made the symlink with my virtual environment. I’m able to switch off my epson projector from command line (echo “standby 0” | cec-client -s -d 1) from my pi account and from my home assistant account. I’ve add my home assistant account in the video group.

an echo “scan” | cec-client -s -d 1 performs the following output (at this stage my projector is switched off):

opening a connection to the CEC adapter…
requesting CEC bus information …
CEC bus information

device #0: TV
address: 0.0.0.0
active source: no
vendor: Unknown
osd string: TV
CEC version: unknown
power status: standby
language: ???

device #1: Recorder 1
address: 1.5.0.0
active source: no
vendor: Pulse Eight
osd string: CECTester
CEC version: 1.4
power status: on
language: eng

currently active source: unknown (-1)

my configuration.yaml file contains the following part :

hdmi_cec:
devices:
TV: 0.0.0.0

When I try to use the hdmi_cec/standby service from the service tool nothing happens even if my projector is on.

Can anybody help me to figure out where my mistake is ?

Thank you guys!