Translations:UPS/21/en

do the following further checks - it could be that UPS is not recognised in USB due to power issue.

lsusb

will list the connected UBS devices. On some umbrel installations, UPS is not recognised on the USB bus and if that happens you would not see that in the output of this command.

umbrel@umbrel:~ $ lsusb
Bus 002 Device 002: ID 2109:0715 VIA Labs, Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
umbrel@umbrel:~ $ 

If this happens on your node, there is an issue and you must check /var/log/syslog

tail -f /var/log/syslog

if you see lots of USB related error messages written of the following description

Jul 26 14:30:55 umbrel kernel: [ 6004.122153] usb 1-1: new high-speed USB device number 122 using xhci_hcd
Jul 26 14:30:55 umbrel kernel: [ 6004.122286] xhci_hcd 0000:01:00.0: Setup ERROR: setup address command for slot 1.
Jul 26 14:30:55 umbrel kernel: [ 6004.330262] xhci_hcd 0000:01:00.0: Setup ERROR: setup address command for slot 1.
Jul 26 14:30:55 umbrel kernel: [ 6004.542121] usb 1-1: device not accepting address 122, error -22
Jul 26 14:30:55 umbrel kernel: [ 6004.670139] usb 1-1: new high-speed USB device number 123 using xhci_hcd

you should stop the apcupsd since your device is not recognising the UPS and filling up the syslog with error messages. If you keep it running UPSD which cannot connect to the UBS device, the syslog will be bloated with these error messages. you can press ctrl-c to stop the output from tail -f