apcupsd-3.14.12 is a maintenance release that addresses a number of small issues in the previous version. It also contains a workaround for an UPS firmware issue that causes killpower to execute repeatedly in a loop, resulting in the UPS continually cycling power. The precise list of affected models is unknown, but the Back-UPS BR models are known to be afflicted and likely many other Back-UPS USB models are as well. If you are utilizing apcupsd with a Back-UPS over a USB interface, it is highly recommended to upgrade to this release.
Release 3.14.11 adds MODBUS RS232 protocol support for newer APC UPSes. This release also adds digital signatures on the Windows USB driver and the Windows installer package which should make installation on recent versions of Windows easier.
The MODBUS protocol gives access to advanced UPS features on newer UPSes that previously only supported Microlink. A firmware upgrade may be required to enable MODBUS support on some UPSes. Please see the ReleaseNotes for further details.
Release 3.14.10 is a maintenance release containing only bug fixes. Most notable are USB compatibility for Mac OS X Lion and a fix for missing and/or spurrious status values on newer BackUPS CS USB models. Please see the ReleaseNotes for details.
Apcupsd 3.14.10 is the latest stable release, containing many bug fixes and new features over previous releases. Users of all previous versions are encouraged to upgrade.
Release 3.14.9 brings a number of new features including…
- SNMP enhancements inclduing support for MGE and RFC1628 MIBs
- Support for USB on 64-bit Windows platforms
Please see the ReleaseNotes for details.