[Nut-upsuser] Salicru SPS One eventually loses connection

[Jim Klimov]

Depending on the OS, a software USB reset request is also an option.

Jim

On Thu, Apr 10, 2025, 19:17 S Shaikh via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> Hi,
>
> I have a Saclicru SPS One 900VA. This is a warranty replacement for an
> earlier SPS One 900, except the first was a model with UK plugs, and
> this one is with IEC.
>
> The first one used to work perfectly with the existing NUT
> configuration. With the new unit, although NUT starts and works for a
> while, eventually it stops working with a "stale data" message. I have
> checked the FAQ and I can't quite figure out if the section on stale
> data applies.
>
> I isolated the driver to get cleaner debug messages, and have provided
> them below. Once the stale message occurs, the only way to fix things is
> by rebooting the host running NUT (and connected to the UPS via USB).
>
> Unfortunately I haven't yet been able to see the output at the time the
> data becomes stale (terminal buffer not big enough). I can try piping it
> to a file.
>
> The output using -DD:
>
> https://pastebin.com/y5ZNXZ55
>
> I think this points to a change in the software in the UPS, but is there
> a way to work around this?
>
> Many thanks
>
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