[Nut-upsuser] [EXTERNAL] Tripp Lite AVR900U

David Zomaya David_Zomaya at tripplite.com
Fri Apr 10 04:42:43 BST 2020

I can confirm there was a protocol change somewhat recently for this model.

It should still be HID-PDC compliant, so I believe it is possible to get it working. Others on the mailing list probably have some useful ideas.

I'm still remote so my ability to run tests for non-networked devices is somewhat limited.

If there's any info I can provide from the Tripp Lite side that we don't already have, feel free to ping me.

Thank you,

David Zomaya

Business/Quality Analyst- Software

Tripp Lite


From: Nut-upsuser <nut-upsuser-bounces+david_zomaya=tripplite.com at alioth-lists.debian.net> on behalf of Mitchell Burdette <mitchell.burdette at gmail.com>
Sent: Thursday, April 9, 2020 9:57 PM
To: nut-upsuser at alioth-lists.debian.net
Subject: [EXTERNAL] [Nut-upsuser] Tripp Lite AVR900U

This is an EXTERNAL email. Please take a moment and think before clicking any links or opening any attachments from this email. If suspicious, please forward to ishelpdesk at tripplite.com for review.

Hello! I am currently having issues monitoring a Tripp-Lite AVR900U. First, here are a few system details:

> Manjaro Linux - kernel 5.4.30-1

> network-ups-tools 2.7.4-5 (built from Arch User Repository)

> (lsusb output) Bus 003 Device 003: ID 09ae:3024 Tripp Lite AVR900U

Contents of /etc/ups/ups.conf:

> [tripplite]
> driver =  usbhid-ups
> port = auto

Contents of /etc/udev/rules.d/50-ups.rules:

> SUBSYSTEM=="usb", ATTR{idVendor}=="09ae", ATTR{idProduct}=="3024", SYMLINK+="ups0", GROUP="nut"

Post-configuration, I rebooted then ran upsdrvctl and received the following output:

> $ upsdrvctl start
> Network UPS Tools - UPS driver controller 2.7.4
> Network UPS Tools - Generic HID driver 0.41 (2.7.4)
> USB communication driver 0.33
> This TrippLite device (09ae:3024) is not (or perhaps not yet) supported
> by usbhid-ups. Please make sure you have an up-to-date version of NUT. If
> this does not fix the problem, try running the driver with the
> '-x productid=3024' option. Please report your results to the NUT user's
> mailing list <nut-upsuser at lists.alioth.debian.org><mailto:nut-upsuser at lists.alioth.debian.org>.

I tried adding the following two lines to my ups.conf:

> vendorid = 09ae
> productid = 3024

Subsequent attempts to start the driver fail:

> ...
> USB communication driver 0.33
> Using subdriver: TrippLite HID 0.82
> libusb_get_report: Input/output error
> Can't initialize data from HID UPS
> Driver failed to start (exit status=1)

While the nut website has a report of "AVR900U" support, the productid differs (3024 vs 2010). I can only assume that my particular model uses a different protocol version, unless there is something I missed!

Kind regards,


This message is for the addressee's use only. It may contain confidential information. If you receive this message in error, please delete it and notify the sender. Tripp Lite disclaims all warranties and liabilities, and assumes no responsibility for viruses which may infect an email sent to you from Tripp Lite and which damage your electronic systems or information. It is your responsibility to maintain virus detection systems to prevent damage to your electronic systems and information.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/nut-upsuser/attachments/20200410/a7dc89d2/attachment.html>

More information about the Nut-upsuser mailing list