[Nut-upsuser] Salicru SPS One eventually loses connection

[S Shaikh]

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