New UPS

[Lyle Tuttle]

At 10:36 AM 12/21/2011, Dazed_75 wrote:
>The manufacturer states rather strongly that unplugging the UPS is a 
>BAD way to test it since that also removes the ground circuit.  So 
>far, my best idea is to go out to the electrical box and flip the 
>relevant circuit breaker off.
>
>The point though, is even that only tests the UPS.  I would need to 
>leave it off long enough for the UPS to request (via that USB cable) 
>that the computer do an orderly shutdown which could take 30 minutes or more.

Whoa!

My understanding is that when a power failure occurs, the UPS takes 
over supplying power immediately - and also signals the system to 
shut down in an orderly fashion....the 30 minutes you mention, IMHO, 
deals with the amount of time the UPS would run the system if it did 
not shut down - on my system, by utilizing various power outlets on 
the UPS, I can somewhat control WHAT components shut down right away.

What if you plug the UPS into a switchable power strip - then turn it off?

>  And worse, I would not know if a non-event meant a failure on the 
> part of the UPS signaling system or the Linux side not making use 
> of the signal event since I still have no idea what to check for.
>
>I bring all this up because my last UPS failed to protect the 
>computer so now I am paranoid about it.
>
>On Wed, Dec 21, 2011 at 8:27 AM, Alex Dean 
><<mailto:alex at crackpot.org>alex at crackpot.org> wrote:
>
>On Dec 21, 2011, at 2:06 AM, Dazed_75 wrote:
>
> > I just put in a replacement UPS (Tripp-Lite G1010USB) and 
> connected the USB cable.  I see that Ubuntu 10.04 does see it but I 
> have no idea how to tell if it will actually pay attention if the 
> UPS ever tells it to shut down.  Short of a power failure, how can one know?
>
>Unplug the UPS from the wall?
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