[Nut-upsuser] NUT & APC Back-UPS 650 under Homeassistant.
Donald Newcomb
donald at newcomb.fastmail.com
Sun Aug 23 12:38:46 BST 2026
I’m trying to integrate my APC Back-UPS 650 with HA. My HA is running on
a Dell Wyse 5070 thin client; When I connect the UPS to the Dell via
USB, what may (but not always) show up in the device list is like
/dev/bus/ups/001/009. The details of this device show all the APC device
details. No other /dev entry links to the UPS. The NUT App steadfastly
refuses to use this device, issuing verbose, specific, objections in the
log, while trying to connect to some random Belkin device, failing and
restarting, over and over and over. It seems that the problem is that
the APC UPS is not fully recognized and “handled” by the OS.
Is this a known issue? Is there a fix? Am I doing something wrong?
P.S. Here’s some of the log file.
“Network UPS Tools 2.8.5 release - Generic HID driver 0.71
USB communication driver (libusb 1.0) 0.53
WARNING: warn_if_bad_usb_port_filename(): port argument specified to
the driver is “/dev/bus/usb/001/009” but USB drivers do not use it and
rely on
libusb walking all devices and matching their identification metadata.
NUT documentation recommends port=“auto” for USB devices to avoid confusion.
This Belkin device (050d:0119) is not (or perhaps not yet) supported
by usbhid-ups. Please make sure you have an up-to-date version of NUT.
If this does not fix the problem, try running the driver with the
‘-x productid=0119’ option, or iterate with explicit ‘-x subdriver=…’
option. Please report your results to the NUT user’s mailing list
atnut-upsuser at lists.alioth.debian.org.
No matching HID UPS found”
--
Donald R. Newcomb
donald at newcomb.fastmail.com
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