I just got a Minuteman MN525 UPS recently. Unfortunately, it came only
with Windows software. Since it has a serial cable, I decided to try
and get it working in Slackware so that it could signal the system and
it could shut down the computer in the event of a power loss. Well,
after fiddling around and monitoring lines, it looks as though the UPS
behaves exactly like the Cyber-sl. To test this, I specified Cyber-sl
and started genpowerd. It partially works. It writes "OK" to
/etc/upsstatus when it starts. I have the UPS plugged into a power
strip so I can simulate power failures easily. When I turn the power
strip off, the UPS starts beeping and providing power from the battery
as it should. the word "FAIL" is written to /etc/upsstatus.
/var/log/syslog gets an entry stating that line power has failed.
However, init never gets signaled, and /etc/powerstatus never gets
created or updated. Looking at the source code, it appears as though it
will try to write to /dev/initctl if NEWINIT is defined. It's supposed
to log an error if it can't write to this FIFO, but it is not. I did a
search on Google, as well as Freshmeat, but could find no similar
problem mentioned. Freshmeat only seems to have Genpower-1.0.2 which
lacks the /etc/genpowerd.conf file, uses a different syntax, and doesn't
have the Cyber-sl listed which as I said, seems to be compatible with my
UPS. Slackware ships with version 1.0.3, but I can find no mention
anywhere of this version nor who created it. Any ideas? Has anybody
else gotten this, or another UPS package to work under Slackware 9.1?
BTW, when I restore power, that is also correctly logged, and "OK" once
again appears in /etc/upsstatus. It just never tells init about it so
it can take action.
If I can figure out why it isn't signaling init, I think I can get it
working.

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On 2004-01-14, Adam Myrow <amyrow@midsouth.rr.com> wrote:
> Has anybody
> else gotten this, or another UPS package to work under Slackware 9.1?

I have gotten nut working wonderfully with Slackware, and now tend to
use it rather than genpowerd. nut seems more active than genpowerd, and
is definitely better documented.

BTW, please use paragraphs--your post was extremely difficult to read.

- --keith

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