[Nut-upsuser] reboot of nut managment node resets Tripplite SMX1000LCD

[Roger Price]

On Mon, 22 Jun 2020, Yogesh Bhanu wrote:

> I'm not sure if it is a bug or a feature.
>
> I'm running Ubuntu 20.04 on my RPi4 which connects to the UPS over USB.
> I have noticed whenever  I reboot my RPi4. It resets the UPS ( I can
> hear the relay)  -- Powerloss.
> Any pointers to disable this annoying bug / feature.

It looks as if the shutdown part of the reboot is issuing a "delayed UPS 
shutdown".   You should be able to see this in the log.   The UPS will then turn 
off it's power outlets say 20 seconds later when the RPi4 has already restarted.

Ways to avoid this:

1. Remove wall power and wait to hear the "clunk" of the relay.  Then restore 
wall power.

2. Stop nut.server before rebooting the RPi4.  This could happen in a script.

Roger