[Nut-upsuser] usbhid-ups becomes unresponsive after extended period

[Jim Klimov]

So just to clarify - the faulty system uses the older packaged NUT (in
Linux) and the newer build of master (in FreeBSD) works better?

Does the newer one also use libusb-1.0 dependency (vs. 0.1 likely for
packaged one), is the custom build that new? It may be that some transport
deficiencies were fixed in that, or in NUT over the years.

For that older setup, probably there are some timeout settings to tell the
driver to reconnect somehow, but can't remember ATM. Also different systems
varied with success of active polling vs interrupt delivery, so "pollonly"
(and freq) options can help.


On Wed, Feb 9, 2022, 03:56 Gary via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> OS name and version: Ubuntu 20.04.3 LTS
> NUT Version: 2.7.4 (installed via apt-get)
> USB communication driver: 0.33
> Subdriver: APC HID 0.96
> Device: APC Back-UPS 550
>
> The usbhid-ups driver seems to stop responding/serving data to upsd after
> running it for a few hours. It works initially when starting the NUT
> service but would stop working after a while. It would start working again
> for a bit if I restart it (sudo upsdrvctl start)
>
> In my syslog, I would get these error messages once it stops working.
>
> Feb  8 15:20:43 internal upsmon[25307]: UPS [ups1 at localhost]: connect
> failed: Connection failure: Connection timed out
> Feb  8 15:20:43 internal upsmon[25307]: UPS ups1 at localhost is unavailable
>
> Reading the log, the upshid-ups log stops updating after a while. For
> example, in this log, it would keep updating until 8282 seconds but nothing
> appears in the log afterwards. The command I use to capture the log is:
> /usr/lib/nut/usbhid-ups -DDDDD -a ups1 > /var/log/usbhid_log 2>&1 &
>
> Log file:
>
> https://drive.google.com/file/d/11LwtnUoF7TweNDxMrIG8ZAxNTlzKwpy7/view?usp=sharing
>
> The troubleshooting steps I have done include:
> - Works without issue: Connecting to a different VM (but on same hardware,
> cable port, usb passthrough) running FreeBSD 12.3 and NUT 2.7.4.1
> --- So it doesn't seem to be an issue with hardware, cable, or VM
> passthrough issue
>
> The setup:
> - APC Back-UPS connected via USB to USB port on machine, passthrough via
> ESXi to guest VM
>
> Greatly appreciate any insights.
>
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