What would I be looking for that I didn't see in my testing with my
windows box? Should I be trying to sniff the serial connection to see
if the UPS is for some reason sending a weird signal that NUT is
mis-interpreting? If so, how would you recommend I do that?
Rob
Peter Selinger wrote:
That is very odd indeed. Why should the system shut off abruptly? If
the log shows nothing, then it seems that the UPS just turned off the
power.
I recommend testing this while attaching, say, a lamp to the UPS,
instead of a computer. (You can still use your computer to monitor the
UPS, just don't plug it into it!)
-- Peter
Rob wrote:
Upsmon is responsible for monitoring and reacting to power events.
See also the man pages for upsmon(8), upsmon.conf(5), upssched(8), and
upssched.conf(5).
There could be many reasons your Windows machine lasts longer than
your Linux machine on their respective UPSs. Perhaps the battery on
the second one is older, or has lost some of its charge, or is lower
quality... Batteries tend to wear out quite easily, especially if they
are discharged and recharged a few times.
Did you try switching the two machines?
On my system, I only have 1 UPS and I have monitored it in windows and
in Linux. In windows, the same set of systems will properly wait until
the designated time to shutdown (>5 minutes). When I boot into Linux,
my Linux system performs an abrupt poweroff after about 5 minutes. I
notice that UPS has been shutoff, but that the system has not been
shutdown cleanly as the logs do not show a system shutdown and disks
need to be recovered on bootup.
In windows, I monitored the power output and saw that the battery
drained very quickly down to 60%, and then stabilized. I contacted
CyberPower about this and they stated that this is a normal discharge
pattern for SLA batteries. Does NUT possibly detect the power drain
rate and perform an action based upon that? Even if the UPS was sending
a low power indicator, I can't see why NUT wouldn't do a clean shutdown
of the system?
Rob
_______________________________________________
Nut-upsuser mailing list
[email protected]
http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
