[Nut-upsuser] Tripp-Lite USB "REMOTE SHUTDOWN"

Aaron Stewart
Tue, 17 Aug 2021 21:53:00 -0000

Around March this year there was a thread on this mailing list
?https://alioth-lists.debian.net/pipermail/nut-upsuser/2021-March/012332.html?.

I appear to be running into the exact same issue, so I was hoping there was some
resolution I could borrow wisdom from. Within seconds of connecting the USB
cable from a ProxMox 6 server (Kernel 5.4.128) to a Tripp Lite SU2200RTXLCD2U ,
the UPS triggers ?OUTPUT OFF  REMOTE SHUTDOWN? and?cuts off output.

Amazingly, this stack (NUT + server + USB + TrippLite UPS) worked beautifully at
first, but has exhibited this behavior ever since I tested with ?upsmon -c fsd?,
and persisted through reboots.

Was there any resolution to the prior discussion I can borrow from? Any flag or
setting I should check on NUT? I already loaded the newest available firmware on
the TrippLite unit. If I tail the upsmon log(s) when I plug the UPS in, the
shutdown happens before the driver recognizes the device, leading me to assume
like the previous poster this is out in the kernel/USB system somewhere.

Thanks,
Aaron

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