Way to shutdown secondary pi when quit emulationstation?

retroguy

I have just set up my retropie on an ubuntu pc and have configured a secondary rpi4 to run my digital marquee. The secondary marquee runs on simpleServer from Visual-RetroPie-Control-Maps and LCDMarqueeUpdate. I got it working and everything looks good there.

My issue is having a nice way to properly shut down both computers without using a hard power off (which is my current setup). I was thinking there is probably a way to use a similar service to control the rpi4 - where ubuntu would shut down using emulationsstation option but then send a signal to the rpi to shut down.

Has anyone got something like this to work, or any ideas on how to do it. I imagine it would be pretty simple if one knew what they were doing (as I do not).

Addison

Immediate shutdown

sudo shutdown -h now

Shutdown in 20 minutes

sudo shutdown -h 20

Shutdown at 5:30 pm

sudo shutdown -h 17:30

Cancel shutdown

sudo shutdown -c

retroguy

@addison said in Way to shutdown secondary pi when quit emulationstation?:

Immediate shutdown
sudo shutdown -h now
Shutdown in 20 minutes
sudo shutdown -h 20
Shutdown at 5:30 pm
sudo shutdown -h 17:30
Cancel shutdown
sudo shutdown -c

Thanks, Addison. This shows me how to shut it down through the cmd line or ssh. What I really would like to do is have no interaction with the rpi that runs the marquee. I would like to have a signal sent to it from the main computer (Ubuntu) which makes it shut down, and I want this automatically sent when I shut down the main computer through emulation station.

Do you have any thoughts on how to do this?

mitu

You can run a command via ssh from your Ubuntu system on the pi

ssh user@<pi> sudo shutdown -h now

You'll have to setup a passwordless ssh login from the Ubuntu to the Pi, you can use a key-based login (as shown here). This way you can run commands on the Pi without providing a user/pass to ssh.

The command to shutdown your Pi can be hooked up to the EmulationStation shutdown event, in a script - see https://retropie.org.uk/docs/EmulationStation/#scripting.

retroguy

@mitu Thanks...this just might work. I'll give it a go and let you know.

I appreciate the support.