[Nut-upsuser] Liebert PSA "On Battery" report

Derek Harding rev.derek.harding at gmail.com
Sat Oct 18 04:06:03 UTC 2014

I downloaded latest source and it compiles ok but the original usbhid-ups.c is unchanged. Pier changed other files, too, and I don't know the changes needed. Simply substituting the modified (as per 2011) usbhid-ups gives a failed connection to the ups. So I have tried a little. I'll uninstall 2.6.3 and try to install 2.7.2 from a fresh compile. 

Thanks for the responses so far :-) 
Best wishes,

On 18 October 2014 16:03:09 GMT+13:00, Tim Dawson <tadawson at tpcsvc.com> wrote:
>I guess it's kind of a natural response on my part, working
>professionally in software. T-Shooting step one: Get current and see if
>the problem persists. If it does,then step rwo: debug. 2+ years is
>forever in software, noting that 2.6.3 was mid 2012 . . .
>- Tim
>On October 17, 2014 9:38:15 PM CDT, Charles Lepple <clepple at gmail.com>
>>On Oct 17, 2014, at 8:31 PM, Tim Dawson <tadawson at tpcsvc.com> wrote:
>>> Likely because 2.6.3 is not a current release. 2.7.2 (or 3?) is rhe
>>current version, and it makes little sense to backport changes.
>>It's possible that these changes didn't make it in. I admit that would
>>be my knee-jerk reaction to seeing an older version number, but the
>>last occurrence of "PSA" in the drivers/ Git log is 2009.
>>> Nut is a trivial compile . . . 'Use the source, Luke . . .'
>>> - Tim
>>On October 17, 2014 6:05:35 PM CDT, Derek Harding
><derek at lagham.org.uk>
>>> Hi,
>>> Back in 2011, it was reported that Liebert PSA devices persist in 
>>> reporting OB (On Battery) when using usbhid-ups regardless of the
>>> state. Pier Paolo did some work (2011) which reportedly solved the 
>>> issue. However, that doesn't seem to have reached mainstream and I
>>> face the same problem.
>>Do you have a link to the message where the problem was solved?
>>> I'm using NUT 2.6.3 with a new Liebert PSA 1500Va that only ever
>>> OB and hence, when the power fails it doesn't trigger a shutdown
>>> 12.04 servers). Latching power fail through upsc works as it should.
>>Not sure what you mean by "Latching power fail" - setting FSD through
>>> Any advice would be gratefully received but I would prefer not to
>>> to rebuild/build. I don't mind replacing with a different, more up
>>> date usbhid-ups.
>>It's hard to tell without seeing the results of upsc for the
>>combination of your UPS and NUT version, but if you have a valid
>>battery charge level, you can use the "ignorelb" setting to synthesize
>>a low battery notification.
>>Charles Lepple
>>A: Because it messes up the order in which people normally read text.
>>Q: Why is top-posting such a bad thing?
>>A: Top-posting.
>>Q: What is the most annoying thing on usenet and in e-mail?

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