I run headless, with serial console. jammy.0.txt
`reboot` does reboot, `poweroff` not power off after shutdown.
boot takes a lot of time, you can see by timestamps.
`armbian-config` allows me to set scheduler to schedutil and set min and max frequences. System cooler was off until I setup 7zip and run benchmark `7zz b`. then system cooler turns on until test was completed, then turns off.
system diagnostics http://ix.io/4cXm