Rebooting Ubuntu 22.04.3 LTS install on a Wyse 3040 frequently results in a shutdown not a reboot.

Linux wyse1 5.15.0-82-generic #91-Ubuntu SMP Mon Aug 14 14:14:14 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Running Ubuntu 22.04 on Wyse 3040 I found the best chance of getting it to reboot was the below procedure.

I removed cloud init because it seemed to delay startup to about a minute after I got a login prompt.

It doesn't reboot successfully if it hasn't finished boot up. So check it has finished boot up.

I was suspiscious that doing an sudo reboot wasn't working either so I sudo su - up to root and then rebooted.

# remove cloud init
apt-get purge cloud-init

# to reboot
# check all the systemd startup processes are running
sudo systemctl is-system-running --wait
sudo su -
# as root
reboot
# or
shutdown -r now