RPI 4 hibernation

Egnos

Hello everybody,
given the energy/climate problems of the planet, I was wondering: is there a way to “hibernate” the RPI? I know the energy saving is little…but everything does…

I was thinking of an automatism that after a certain time switches off the RPI and switches on again after another time that can always be configureable.
When it is off it should remain in a state of “hibernation” and then resume the same tasks when it restarts.

It would be possible? Has anyone already thought about it?

Thank you all!

sdetweil

@Egnos once turned off, it cannot be turned back on via program…

so the only way is to use an external switch to turn off power, and turn it back on…

shutdown
wait
power off (use a relay, or …)

you MUST shutdown, cannot just power off…

MMRIZE

@Egnos
Impossible. None of the Raspberry Pis has had a “sleeping” or “hibernating” mode.
And Pi itself has no feature to wake up by time or WOL. So you may need additional h/w like a smart outlet or HAT (e.g. wittyPi) for controlling power externally, and their price is higher than the saving amount from Pi.

sdetweil

@MMRIZE said in RPI 4 hibernation:

and their price is higher than the saving amount from Pi.

good point!

Egnos

@MMRIZE said in RPI 4 hibernation:

Impossible. None of the Raspberry Pis has had a “sleeping” or “hibernating” mode.
And Pi itself has no feature to wake up by time or WOL. So you may need additional h/w like a smart outlet or HAT (e.g. wittyPi) for controlling power externally,

… but in any case when it is switched on again I should restart everything (MM, etc …).

@MMRIZE said in RPI 4 hibernation:

and their price is higher than the saving amount from Pi.

that’s for sure…but if you think so you wouldn’t do many things…