[Nut-upsuser] [EXTERNAL] Tripp Lite "Remote Shutdown" when USB cable is attached

Adam Talbot ajtalbot1 at gmail.com
Fri Feb 5 18:11:30 GMT 2021

I am USB only.  No network card installed.

On Fri, Feb 5, 2021 at 10:08 AM David Zomaya <David_Zomaya at tripplite.com>

>  >> So confused.  Downloaded Ubuntu 20.04
> (ubuntu-20.04.2-desktop-amd64.iso) and booted my laptop to a liveCD
> environment. Watched all the systems logs and plugged in.  UPS did it's
> "REMOTE SHUTDOWN". Nothing of interest in the logs.  Unplugged the  USB and
> waited about 5m.  Plugged
>  >> USB back into my laptop, nothing, unplugged...  Rebooted the LiveCD
> environment, plugged USB back into my laptop, nothing, unplugged...  VERY
> stumped, plugged the USB cable back into my NAS, and everything is happy.
>  >> I know the problem is still there.  I know it's going to bite me
> again, but I can't seem to reliably trigger it.  Very frustrating.
>  >> Thoughts?
> There are a limited number of scenarios where the we'd get REMOTE SHUTDOWN
> on the screen. Just to make sure I'm covering all my bases:
> Neither of you are using a network card, RS232 serial connection, or EPO
> connection to the UPS, correct?
> Assuming no, that narrows down things for me to focus on.
> As an aside: if anyone else on the mailing list either uses these models
> (Tripp Lite 4004 USB protocol with LCD screens) and sees the problem or
> does NOT. would be an interesting data point.
> Thank you,
> David Zomaya
> Tripp Lite
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