TL;DR - I can only get apcusbd to work if I both restart apcusbd and unplug and plugin the USB. It doesn't seem to matter which I do first. Having to unplug and plug in a usb each time the server shuts down seems unrealistic. Any help is appreciated.
I have a brand new APC P-SMT1000C connected to unraid through USB.
When unraid starts up with the USB plugged in from startup, I get the following. It's always some random number for Battery Charge (6.2, 1.5, etc) and i
Do you have the APC USB plugged into a USB3 port? I don't know if/why that could be a problem. Maybe for some reason the USB 3 port is dropping the 'connection'. If so, use a USB2 port, and repeat.
This is totally irrelevant, but this is what happened to me when I went from USB UPS Type to ModBus (which dropped communication since I actually have CyberPower), and back again.
Aug 11 20:59:34 UNRAID apcupsd[1202]: apcupsd exiting, signal 15
Aug 11 20:59:34 UNRAID apcu