teije Posted February 9 Share Posted February 9 I have an APC Back-UPS BX950MI Yesterday it was able to talk to my unraid server just fine, today it says: 'Lost communication' How do I troubleshoot what is going wrong? I have rebooted the server already and reconnected the USB cable going from the UPS to the server multiple times. I am at a loss, so thanks in advance for any help! Quote Link to comment
Gragorg Posted February 9 Share Posted February 9 Try switching to a USB 2.0 port and wouldn't hurt to try another cable. Stop and restart the UPS daemon in settings and see if it pick back up. Some people also have better luck with the NUT plugin. Quote Link to comment
teije Posted February 12 Author Share Posted February 12 Thanks for your response, I have checked the following things: - Connect the USB cable to a USB2.0 port - Restarted the UPS daemon (& Unraid) - Installed the NUT plugin No luck so far, unfortunately. I have left the NUT plugin in its default configuration, is there something I should change? Also I was wondering; is it possible that my USB ports enter some form of suspended state? When I connect the UPS to my Windows laptop, the Powerchute software recpgnizes the UPS just fine. Quote Link to comment
whitephoenix117 Posted February 14 Share Posted February 14 I also lost mine in the dashboard recently, but it's showing as a USB device. Quote Link to comment
teije Posted February 14 Author Share Posted February 14 Bumping, does anyone have more troubleshooting suggestions? Quote Link to comment
trurl Posted February 14 Share Posted February 14 Might just be broken. I had one that quit connecting and I had to replace. Quote Link to comment
whitephoenix117 Posted February 17 Share Posted February 17 (edited) Restarting restored the proper functionality 🤷♂️ But after a day or so it stopped again, was able to repeat this behavior 2x Edited February 17 by whitephoenix117 Quote Link to comment
whitephoenix117 Posted March 2 Share Posted March 2 So I have an interesting diagnostic update. Home assistant is still collecting data from the APC UPS daemon, but the card on Unraid is broken. Meaning, Unaird is still communicating with the UPS. Quote Link to comment
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