Mike wrote:

> Andy Burns wrote:
>
>> Tim Streater wrote:
>>
>>> The Pi carried on being powered.
>>
>> Unless a 4B is different to any other rPi, they never turn off, they
>> just halt.
>
> But, from the original post, which you snipped :-
>
>> A bit later I shut it down, **and then turned off the Pi power supply.**
>> The Pi carried on being powered.
>
> Are you saying the Pi 4B is a stealth free-energy device? ;)

The Pi is the HDMI source, and the monitor is the HDMI sink, per the
spec the 5V power should be supplied from the Pi to the monitor, not the
reverse ...

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