Monitoring SDDM to Auto-Shutdown PC if Never Logged In

Help
1

Hey everyone,

I’m trying to create a script that monitors my PC when I turn it on via Wake-on-LAN (WoL) and shuts it down if I never log in or if I lock the screen for too long. I’ve managed to check for screen locking by detecting the kscreenlocker_g process, but I’m struggling to determine if I never leave the SDDM screen after booting.

The tricky part is that SDDM runs regardless of whether I’m logged in or not, so I can’t just check if it’s running. My PC also has Wolf (Games on Whales) installed, and I want the script to ensure that if I haven’t logged in, or the screen is locked, and no Wolf container is running, the PC should shut down after 30 minutes. This works fine for a locked screen, but I can’t find a reliable way to detect if I never left SDDM at all.

Does anyone know a good method to check if a session was never started from SDDM? Any ideas would be greatly appreciated!

2

Hi! I’d think pretty much anything related to Plasma itself wouldn’t have been started if no users had logged into a Plasma session since the device booted - ex. the plasmashell process, or the systemd user unit plasma-plasmashell.service. Maybe you could check for those?