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 Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
