[Nut-upsuser] NUT + OpenBSD + dc2500cc + APC Smart-UPS SC620 = problem

Kastus Shchuka ks-nut at tprfct.net
Fri May 2 07:26:33 UTC 2014


I am trying to set up NUT on a mini-ITX system running OpenBSD 5.5.

I have an APC Smart-UPS SC620 which runs perfectly well on Ubuntu,
with nut-2.2.1. Ubuntu system uses ASUS motherboard.

On mini-ITX system, I have Intel d2500cc motherboard with 4 serial ports.
I've tested ports by connecting them with a null-modem cable and running cu
in 2 terminals. Type in one terminal, output shows in the other, and vice versa.

I disconnect UPS from Ubuntu system, connect it to OpenBSD, try apcsmart 
driver, and in 15 seconds it comes back with a message "unable to detect 
an APC Smart protocol UPS on port /dev/cua01". NUT is installed from OpenBSD
packages, version 2.7.1. APC Smart protocol driver 3.2 (2.7.1)

I suspect there is something special with serial ports on d2500cc motherboard
as I also tried, out of curiousity, apcupsd from OpenBSD ports, and it failed
to detect the UPS either.

I wonder if anybody else has successfully run NUT on d2500cc motherboard with
serial UPS? 



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