[Nut-upsuser] [EXTERNAL] Re: UPS Losing Connection

Kirk Bocek t004 at kbocek.com
Thu Sep 24 17:53:27 BST 2020

On 9/24/2020 9:05 AM, David Zomaya wrote:
> Update from my end:
> I found the old thread where I posted a possible resolution for a similar issue on CentOS 7.6 with the same protocol (2012):
> https://alioth-lists.debian.net/pipermail/nut-upsuser/2019-June/011451.html
> https://alioth-lists.debian.net/pipermail/nut-upsdev/2019-June/007440.html
> Some of my initial steps were probably unnecessary, but through a combination of configuration tweaks and udev rules, the drops seemed to go away.
> Of course, if the USB port is not responding at all, that is a separate issue (is there another computer/cable to verify that with?). You should contact tech support if that ends up being the case:
> https://www.tripplite.com/support/help
> (I'm no longer on the tech support team so I couldn't help directly with an RMA if needed)
> Thank you,
> David Zomaya
> Tripp Lite

I plugged the USB into another host and nothing. Not in lsusb output. No 
hotplug messages in the ring buffer.

So is this a busted unit? Is there anyway to reset the USB on the UPC 
without power cycling everything attached to it?

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