On 3/28/26 9:30 PM, David C Rankin wrote:
Thank you Lukasz,

  I'm a bit confused where it goes? It's an option to usbhid-ups according to man upbhid-ups(8), but where in the config setup does it go? The Arch wiki (https://wiki.archlinux.org/title/Network_UPS_Tools#CyberPower_UPS_keeps_disconnecting/reconnecting) talks about creating an override.conf, but it is unclear whether that goes with [email protected] or nut-driver@valkyrie_ups.service.d? The systemd targets and service files are a bit of a spiderweb:

I think that it is safer to alter nut-driver@valkyrie_ups.service. It is autogenerated by enumerator from /etc/nut/ups.conf entries.

As for pollonly flag, it is an usbhid-ups config flag, so you have to add it to your ups section in /etc/nut/ups.conf.

Picking up from the driver restart yesterday, the journal shows the following:


  The salient part starts with a spurious on-battery message and then the connection with the UPS fails. I'm beginning to wonder if the "on-battery" may not just be the daily self-test of the UPS, but then why does it stop communicating with nut-monitor? It ran for 5+ years with NUT 2.7 version and never had a disconnect issue, not one. Really strange.

It looks like regression. Maybe some defaults for |pollfreq | or |pollinterval |changed?

Regards,
Łukasz

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