On 12/10/2014 at 10:12 AM, Darac Marjal wrote: > On Wed, Dec 10, 2014 at 09:42:43AM -0500, The Wanderer wrote: > >> On 12/10/2014 at 06:10 AM, Andrei POPESCU wrote: >>> That would be easy to implement, assuming you computer "knows" >>> it's running on batteries. >> >> On batteries is easy enough, for a laptop-style system. >> >> But for a more ordinary desktop (or server), running on a UPS, how >> is it supposed to know that it is on battery-based power? >> >> It's plugged in through an ordinary power cable, with no other >> connection to the power source. What indication is it supposed to >> have that the power source at the other end of that cable is any >> different from a standard wall outlet? >> >> I imagine that this might be one of the things the "USB cable from >> the UPS" is intended to address, but I don't think my own UPS (for >> example) includes any USB port, despite being a fairly high-end >> unit. (And off the top of my head I don't know of any software to >> handle that in Debian.) > > NUT and APCUPSd are the most obvious solution Yeah, I figured there would be software for the purpose which I didn't specifically know about. At a glance, however, both of those look like they still require a USB connection... and my (APC) UPS doesn't seem to have a USB port. It does have a network port, so I imagine that maybe I could get things working with a network cable to the house switch, but that seems like a clunky and unwieldy sort of solution at best. -- The Wanderer The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -- George Bernard Shaw
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