[Nut-upsuser] Need help with Unitek Alpha 1200sx.

[Joseph Borg]

Hi Alexander,
sounds like a plan to me. I'll update to 2.2.2 over the weekend (on both
machines) and we can take it from there. As for you pointers:

- The two UPSs were purchased at the same time (so I have no reason to
believe their internal hardware is different).
- Both computer are different (i.e. different motherboard etc.) so I don;t
think it's a host hardware issue.
- They're both running Fedora 8 with the latest kernel, albeit that one is
x86_64 and one is i386.

That said, I'll upgrade them over the weekend and take it from there. If you
could let me know about any specific things you want me to take a note of
and how to do stracing etc, I'll do so.

Cheers,

Joe


On Wed, Oct 8, 2008 at 11:00 PM, Alexander I. Gordeev <lasaine at lvk.cs.msu.su
> wrote:

> Hi Joseph,
>
> Nice to see you again :)
>
> On Tuesday 07 October 2008 23:21:32 Joseph Borg wrote:
> > Hi,
> > Apologies for picking up on this old thread but I never had gotten this
> > issue resolved and I'm now back in the location where the UPSs are so I
> was
> > hoping we could look into the issue again.
> >
> > Basically, I had two Unitek Alpha 1200sx UPSs, connected to Fedora Linux
> 8.
> > The NUT version seems to be:
> >
> > Network UPS Tools upsd 2.2.0-
> > not listening on 0.0.0.0 port 3493
> >
> > The driver seems to be the megatec_usb driver. The problem I have is that
> > this only seems to work occasionally (I typically have to restart the
> > deamon several times, switch on/off the UPSs etc in order to get it to
> > work). Most of the time, the controller seems to fail to start up and I
> > subsequently get the following message:
> >
> > Broadcast message from nut (Tue Oct  7 21:14:44 2008):
> >
> > UPS unial1200 at localhost is unavailable
> >
> > I'm not quite sure what other information you'd need. That said, I can
> > provide any output requested.
> >
> > Thanks in advance for helping me out.
> >
> > Joe
> >
>
> First of all I suggest you to update your NUT to the latest version. There
> is
> at least one reason for that - megatec_usb driver now supports automatic
> reconnection after link fail. This is not a fix.
>
> I have several suspects on this subject:
>
> 1. hardware.
>
> Something could not ok in both UPSes (not very likely) or in the USB host
> hardware. Try connecting the UPSes to other machines.
>
> 2. software
>
> It could be everything: kernel, udev, NUT... I think strace-ing megatec_usb
> can help.
>
> --
>   Alexander
>
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