On Sep 19, 2014, at 7:48 PM, Shade Alabsa <[email protected]> wrote:

> So I was wondering does NUT do anything which would cause the USB to 
> disconnect?

Not intentionally, no. The reconnection code is meant to clean up after these 
disconnection events, but it is something that isn't expected all that 
frequently.

> I didn't think so and I couldn't find anything yet it's quite possible I 
> missed it. I've tested this with CentOS 6.5 and Fedora 20. With CentOS we 
> were using nut-client-2.6.5-2.el16.x86_64 and nut-2.6.5-2.el6.x86_64. With 
> Fedora we were using nut-2.7.2-1.fc20.x86_64 and 
> nut-client-2.7.2-1.fc20.x86_64.

What kernel versions?

We have had a number of recent reports of issues with USB 3.0 host controllers. 
While it seems like your UPS is getting picked up by the uhci_hcd driver, you 
might want to check if another USB port works better. Also, make sure you are 
using a decent-quality cable (no passive USB extenders, etc.).

I am also slightly suspicious of mtp-probe. We haven't done any testing with 
other programs trying to access the UPS at the same time, but there is some 
code in NUT to try and catch two NUT drivers from tripping over each other. But 
it only shows up in the Fedora output, and its messages seem closer to when the 
device is attached, rather than when it disconnects. I'm not sure if Fedora or 
CentOS have "server" builds, but I would recommend starting from the minimum 
software necessary and building up.

-- 
Charles Lepple
clepple@gmail




_______________________________________________
Nut-upsuser mailing list
[email protected]
http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser

Reply via email to