I have a TrippLite AVR550U that my company uses several individual Linux boxes in one large system, all running Ubuntu 18.04LTS, and all will be using the package version of nut - 2.7.4. In my scenario, our usage case is for the PCs to all shut down, followed by the individual UPSes, when mains power is removed from the whole system. (This isn't a typical setup for UPS, but it's what we designed for our needs.)
I have a basic "standalone" setup running OK - I can pull the plug, the PC shuts down, followed by the UPS, and everything is great. Except... When reapplying the mains power, the UPS isn't starting the load back up. I have to force it to start from the panel button, which is a requirement. Linux isn't my native environment; one of the PCs in our system does run Windows, and using TrippLite's PowerAlert software, I can configure the UPS to auto restart on power -- and it works very well. So, I *know* there's something that can be sent to the UPS to configure for auto-start. Alas, in three days of struggles with everything, I still haven't found the answer to this problem. Hopefully it's just a configuration parameter I've missed. Or if nothing else, I can adjust the nut source to push the command(s) - if I can figure it out. I'm about to try to use Wireshark+USBCap on Windows to trace what's going to the TrippLite when this setting is changed -- I've just had very little luck with WS/USBCap in the past, just too much information to sort through. Any suggestions would be appreciated!
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