[Nut-upsuser] newhidups USBDEVFS_CONTROL failed: ret -110 messages

[Roger Price]

Dear List, I have an MGE Ellipse 1500.  I run openSUSE 10.2, kernel 
2.6.18, libusb 0.1.12, nut 2.0.5.  ps shows that the following processes 
are running:

/usr/lib/ups/driver/newhidups -a mgeups
/usr/sbin/upsd -u root
/usr/sbin/upsmon
/usr/sbin/upsmon

NUT operates correctly, shutting down the server after 4 minutes without 
power.  However I'm seeing 25 to 50 messages logged each day in 
/var/log/messages of the form:

Jun 21 16:11:40 pastis kernel: usb 3-1: usbfs: USBDEVFS_CONTROL failed cmd 
                               newhidups rqt 128 rq 6 len 255 ret -110
Jun 21 16:46:29 pastis kernel: usb 3-1: usbfs: USBDEVFS_CONTROL failed cmd 
                               newhidups rqt 161 rq 1 len 2 ret -110
 
I read in Arnaud's message
http://www.mail-archive.com/nut-upsuser@lists.alioth.debian.org/msg00654.html

> the -110 error is a timeout. what are your kernel and libusb versions? 
> What the frequency of these messages?

> I've not seen that kind of msg for long, but it was generally due to a 
> temporary "deny of service" from the UPS, ie it's currently running a 
> self test while the driver request the complete data tree...

Can I ignore these newhidups messages as "background noise"?

I also run the mgeups-psp-3.0.2 front end which shows two or three
"communication failures" each day lasting either 2 or 4 seconds.

Can I ignore these messages as well?

Roger