[Nut-upsuser] Eco Eclipse 1600 connects via USB put does not put out any data:

[Jim Klimov]

Did you check also that `upsc` client does not report anything about the
device?

The message indicates that some other process has a hold on the USB devfs
node, and those can typically be either other copies of a NUT driver,
rarely some other programs that see and grab HID devices, or in case of
virtualization and pass-through - the device being busy in the guest or
host system (other than the one NUT runs in, so harder to debug or notice
specific symptoms).

With NUT v2.8.0 and newer on a Linux (or illumos) system I'd guess the
`nut-driver-enumerator` service integration has spawned a `nut-driver at Eaton`
instance and that is what is holding the device. A systemd unit may have
been started without a PID file, so the copy started from command line does
not see that one to kill off (as NUT drivers usually do since the dawn of
time, assuming a frozen older copy).

More details here:
https://github.com/networkupstools/nut/wiki/nut%E2%80%90driver%E2%80%90enumerator-(NDE)

Newer NUT versions should be more informative in the log about such
situations, as well as capable of communicating with the older copy (if it
is not frozen) over Unix sockets "intelligently" instead of sending
bare-bone signals to reload or exit with no feedback.

Jim




On Fri, Jul 5, 2024 at 1:16 PM Stefan Schumacher via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> Hello
>
> Initial Disclaimer: I used this tutorial. I know its in german but the
> entries to be made in the configuration files are marked and should be
> able to identify if there are any errors.
>
> https://techbotch.org/blog/ups-setup/index.html
>
> After several power failures and damaged fuses I decided to give Eaton
> & Nut another try. Eaton because the model I bought seems to be the
> one on the market which has the most power without a permanent fan.
> Unfortunately I don't even get as far as the last time. Lets begin
> with the basic info:
>
> I am using: Debian Bookworm 12.6 with these packages, which were
> installed from the official Debian Repository.
> ii  nut                             2.8.0-7
>   all          network UPS tools - metapackage
> ii  nut-client                      2.8.0-7
>   amd64        network UPS tools - clients
> ii  nut-server                      2.8.0-7
>   amd64        network UPS tools - core system
>
> My device is a: https://www.eaton.com/de/de-de/skuPage.EL1600USBDIN.html
>
> There is a connection between the USV and the server it protects.
> lsusb = Bus 001 Device 002: ID 0463:ffff MGE UPS Systems UPS
>
> What follows is the output of the driver. As you can see I am running
> it as root. What are the next steps I should take?
>
> Thanks in advance
> Stefan Malte
>
> root at mars:/usr/lib/nut# ./usbhid-ups -DD -a Eaton
> Network UPS Tools - Generic HID driver 0.47 (2.8.0)
> USB communication driver (libusb 1.0) 0.43
>    0.000000     [D1] debug level is '2'
>    0.001566     [D2] Initializing an USB-connected UPS with library
> libusb-1.0.26 (API: 0x1000109) (NUT subdriver name='USB communication
> driver (libusb 1.0)' >
>    0.001575     [D1] upsdrv_initups (non-SHUT)...
>    0.004892     [D2] Checking device 1 of 7 (1D6B/0003)
>    0.004908     [D1] Failed to open device (1D6B/0003), skipping:
> Access denied (insufficient permissions)
>    0.004911     [D2] Checking device 2 of 7 (0BDA/5452)
>    0.004917     [D1] Failed to open device (0BDA/5452), skipping:
> Access denied (insufficient permissions)
>    0.004921     [D2] Checking device 3 of 7 (1D6B/0002)
>    0.004926     [D1] Failed to open device (1D6B/0002), skipping:
> Access denied (insufficient permissions)
>    0.004929     [D2] Checking device 4 of 7 (1D6B/0003)
>    0.004937     [D1] Failed to open device (1D6B/0003), skipping:
> Access denied (insufficient permissions)
>    0.004941     [D2] Checking device 5 of 7 (0463/FFFF)
>    0.463157     [D2] - VendorID: 0463
>    0.463198     [D2] - ProductID: ffff
>    0.463215     [D2] - Manufacturer: EATON
>    0.463231     [D2] - Product: Ellipse ECO
>    0.463249     [D2] - Serial Number: 000000000
>    0.463268     [D2] - Bus: 001
>    0.463287     [D2] - Device: unknown
>    0.463314     [D2] - Device release number: 0100
>    0.463332     [D2] Trying to match device
>    0.463350     [D2] match_function_subdriver (non-SHUT mode):
> matching a device...
>    0.463603     [D2] Device matches
>    0.463624     [D2] Reading first configuration descriptor
>    0.463662     [D2] failed to claim USB device: Resource busy
>    0.463689     [D2] Kernel driver already detached
>    0.463714     [D2] failed to claim USB device: Resource busy
>    0.463740     [D2] Kernel driver already detached
>    0.463764     [D2] failed to claim USB device: Resource busy
>    0.463787     [D2] Kernel driver already detached
>    0.463809     [D2] failed to claim USB device: Resource busy
>    0.463831     [D2] Kernel driver already detached
>    0.463854     Can't claim USB device [0463:ffff]@0/0: Entity not found
>
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