According to discussion on the apcupsd-users mailing list [1] this issue is OS-specific rather than being a problem in upstream apcupsd.
Specifically it is believed that this issue is due to Ubuntu shutting down USB before the killpower command is issued to the UPS, which which it is no longer possible to communicate without USB. [1]: https://marc.info/?t=147606479000001&r=1&w=2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1634572 Title: APCUPSD does not send killpower command to UPS (only happens on Ubuntu 16.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apcupsd/+bug/1634572/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
