[Nut-upsuser] Tripp Lite AVR900U

[Mitchell Burdette]

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>.

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,

Mitchell

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