[nut-Bugs][313034] PW3105 / PW5110 was unable to re-established with the server after re-plug of the USB cable

[nut-bugs at alioth.debian.org]

Bugs item #313034, was opened at 2011-03-11 18:00 by vijay waghmare
You can respond by visiting: 
https://alioth.debian.org/tracker/?func=detail&atid=411542&aid=313034&group_id=30602

Status: Open
Priority: 3
Submitted By: vijay waghmare (vijay-waghmare-guest)
Assigned to: Nobody (None)
Summary: PW3105 / PW5110 was unable to re-established with the server after re-plug of the USB cable 
Category: Driver
Group: None
Resolution: None


Initial Comment:
NUT is installed on FC-14-32 OS. PW3105 is connected using USB connectivity. 
upsd is started and connection was successfully established with the UPS.
When USB cable is unplugged from the UPS while upsd is running, "Communications with UPS PW5110 at FC-14-64 lost" message is displayed on the console.
Wait for approx 2 minutesm and re-connect the USB cable to the UPS, after waiting for approx 5 minutes, "UPS PW5110 at FC-14-64 is unavailable" message is displayed on the console.

Below is the console output after communication was lost with the UPS - 

# upsc PW5110 at FC-14-64
it showed "Error: Data stale

[root at FC-14-64 eaton]# ps -ef | grep ups
root      1439     1  0 13:32 ?        00:00:00 cupsd -C /etc/cups/cupsd.conf
nut       1962     1  0 13:35 ?        00:00:00 /usr/sbin/upsd
root      1964     1  0 13:35 ?        00:00:00 /usr/sbin/upsmon
nut       1965  1964  0 13:35 ?        00:00:00 /usr/sbin/upsmon
root      1977  1944  0 13:37 pts/0    00:00:00 grep --color=auto ups

[root at FC-14-64 eaton]# ps -ef | grep bcmxcp
nut       1960     1  0 13:35 ?        00:00:00 /sbin/bcmxcp_usb -a PW5110
root      1979  1944  0 13:37 pts/0    00:00:00 grep --color=auto bcmxcp

I checked above upsd is running.

To re-establish the communication with the UPS, user has to manually stop and start the driver service.
# /sbin/upsdrvctl start PW5110

Following are the combination of hardware devices, where this issue is observed -

OS Name: Fedora Core 14 (32 OS)
UPS Name : PW3105 with USB connectivity
NUT driver ver: 2.6.0

OS Name: Fedora Core 14 (64 OS)
UPS Name : PW5110 with USB connectivity
NUT driver ver: 2.6.0


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You can respond by visiting: 
https://alioth.debian.org/tracker/?func=detail&atid=411542&aid=313034&group_id=30602