[Nut-upsuser] Two APC UPS deivces, Fedora, slightly lost

Gavin Davenport gavdav at gavdav.net
Wed Apr 29 23:55:46 BST 2026


I have 2 APC UpS devices - I have a group of 4 machines connected to various outputs on them and they are connected by USB to the same fedora host.

I'm having issues with nut reliabl discovering both devices

Here's my ups.conf

  [850g2]
      driver = usbhid-ups
      port = auto
      desc = "APC Back-UPS ES 850G2"
      serial = 5B1932T42066

  [1050g2]
      driver = usbhid-ups
      port = auto
      desc = "APC Back-UPS BE1050G2"
      serial = 9B2545A15277

I'm hoping nut will match on the serial number of the device.

I've been rather led astray by chatgpt making stuff up and then forgetting where it is - so I'm a bit confused about whether I try to have udev prepare the appropriate symlinks for nut

I've had this working (2 Ups devices being monitored, but all a bit hand-cranked). I can't get it to survive a reboot.

Are there any known issues with using 2 APC Ups devices which announce themselves very similarly ?
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