Hi. I have a Odroid XU4 with Ubuntu Bionic latest release (5.60), powered with this UPS: APC SmartUPS 750 VA. Apcupsd doesn't work. The problem seems related to the missing /dev/usb/hiddev0.   After searching on Google, I found that apcupsd requires this feature enabled in the kernel. CONFIG_USB_HIDDEV=Y   I build my own kernel enabling it, but no change. Here the output of the command # dmesg | grep Smart [ 4.125553] usb 1-1.2: Product: Smart-UPS 750 FW:651.1