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From: "R.Wieser" <address@is.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Releasing the TV before shutting down ?
Date: Fri, 2 Aug 2024 16:40:11 +0200
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Joerg,

> Yes, it is possible for a Raspberry Pi to send a signal to a TV to
> switch the HDMI input before shutting down. This can be done using
> CEC (Consumer Electronics Control),

A partial success.  After having installed  the cec-client software I was 
able to do a scan and switch the TV off (meaning : the TV does respond to 
CEC commands).

However, the "as" argument didn't seem to do anything.

I also tried a few "tx" arguments (found on the Web) with the TV (0.0.0.0) 
as the target but could not evoke a back-to-tuner-input response either.

Any idea(s) ?

Regards,
Rudy Wieser