[Nut-upsdev] Cyberpower 900AVR/BC900D newhidups problem

Peter Selinger selinger at mathstat.dal.ca
Wed Apr 19 15:05:02 UTC 2006

Lincoln Turner wrote:
> > > I was most unimpressed with cyberpower's NDA policy. The tech guy was
> > > quite helpful, but said that they couldn't release their protocol
> > > details to anyone without an NDA and that precluded open source. He
> > > knew about nut and was even prepared to ship free products to 'nut
> > > people' but not the protocol. Why a hardware maker benefits from
> > > keeping the protocol secret is beyond me!
> > 
> > Probably because they did not develop it themselves, but bought it
> > from another company. My guess is that they are probably themselves
> > bound by an NDA. This could explain their relative happiness to give
> > away free products to a NUT developer. We should certainly keep it in
> > mind for the future.
> I see. The technician said that he had 'tried to contact the nut
> mailing list', but had had no response. I suspect he didn't try very
> hard - I've found the list very responsive. But you could chase it up
> with them.
> BTW I found your instructions "Linux and the APC Back-UPS ES" very
> useful in getting going with my new APC ups. The only discrepancy I
> found with my setup was the hotplug stuff - gentoo and many other
> distros now use udev rules files, and it was just a matter of finding
> these in the scripts/hotplug-ng directory and using them instead.

Would you like to send me an addition to the instructions? I don't use
any of those distros, so I have never tried the hotplug-ng stuff. The
instructions should be validated, i.e., one should get another person
to follow the instructions after writing them. Usually it turns out
one has forgotten some steps. For this reason, I can't write them

-- Peter

P.S. please reply to the list, not to me personally. 

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