Comment 7 for bug 920695

1. Please find the log below:

<<
georg@zulia:~$ hp-toolbox -g

HP Linux Imaging and Printing System (ver. 3.12.2)
HP Device Manager ver. 15.0

Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-toolbox(UI)[3504]: debug: Initializing toolbox UI (Qt4)...
hp-toolbox(UI)[3504]: debug: HPLIP Version: 3.12.2
hp-toolbox(UI)[3504]: debug: Loading user settings...
hp-toolbox(UI)[3504]: debug: FAB command: /usr/bin/hp-fab
hp-toolbox(UI)[3504]: debug: Scan command: /usr/bin/simple-scan %SANE_URI%
hp-toolbox(UI)[3504]: debug: Auto refresh: True
hp-toolbox(UI)[3504]: debug: Auto refresh rate: 30
hp-toolbox(UI)[3504]: debug: Auto refresh type: 2
hp-toolbox(UI)[3504]: debug: Systray visible: 0
hp-toolbox(UI)[3504]: debug: Systray messages: 0
hp-toolbox(UI)[3504]: debug: Last used device URI:
hpfax:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Last used printer: Officejet_Pro_8600
hp-toolbox(UI)[3504]: debug: Working directory: .
hp-toolbox(UI)[3504]: debug: Connecting to com.hplip.StatusService (try #1)...
hp-toolbox(UI)[3504]: debug: Starting GUI loop...
hp-toolbox(UI)[3504]: debug: Rescanning device list...
hp-toolbox(UI)[3504]: debug: hp:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hp is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: Cache miss: officejet_pro_8600
hp-toolbox(UI)[3504]: debug: Reading file:
/usr/share/hplip/data/models/models.dat
hp-toolbox(UI)[3504]: debug: Searching for section
[officejet_pro_8600] in file /usr/share/hplip/data/models/models.dat
hp-toolbox(UI)[3504]: debug: Found section [officejet_pro_8600] in
file /usr/share/hplip/data/models/models.dat
hp-toolbox(UI)[3504]: debug: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hpfax is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: Adds:
hpfax:/net/Officejet_Pro_8600?zc=dhcppc9,hp:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Removals (1):
hp-toolbox(UI)[3504]: debug: Updates:
hp-toolbox(UI)[3504]: debug: adding: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Device URI:
hpfax:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Printer: None
hp-toolbox(UI)[3504]: debug: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hpfax is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: URI: backend=hpfax, is_hp=True, bus=net,
model=Officejet_Pro_8600, serial=, dev=, host=dhcppc9, port=1
hp-toolbox(UI)[3504]: debug: Model/UI model: Officejet_Pro_8600/HP
Officejet Pro 8600
hp-toolbox(UI)[3504]: debug: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hpfax is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: Re-reading CUPS printer queue information.
hp-toolbox(UI)[3504]: debug: adding: hp:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Device URI: hp:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: Printer: None
hp-toolbox(UI)[3504]: debug: hp:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hp is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: URI: backend=hp, is_hp=True, bus=net,
model=Officejet_Pro_8600, serial=, dev=, host=dhcppc9, port=1
hp-toolbox(UI)[3504]: debug: Model/UI model: Officejet_Pro_8600/HP
Officejet Pro 8600
hp-toolbox(UI)[3504]: debug: hp:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hp is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: Re-reading CUPS printer queue information.
hp-toolbox(UI)[3504]: debug: Removals (2):
hp-toolbox(UI)[3504]: debug: Re-reading CUPS printer queue information.
hp-toolbox(UI)[3504]: debug: Saving user settings...
hp-toolbox(UI)[3504]: debug:
updateDevice(hpfax:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Sending event 9010 to
com.hplip.StatusService (via dbus)...
hp-toolbox(UI)[3504]: debug:
updateDevice(hp:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Sending event 9010 to
com.hplip.StatusService (via dbus)...
hp-toolbox(UI)[3504]: debug: Handling event...
hp-toolbox(UI)[3504]: debug:
device_uri=hpfax:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: printer_name=
hp-toolbox(UI)[3504]: debug: event_code=9003
hp-toolbox(UI)[3504]: debug: username=georg
hp-toolbox(UI)[3504]: debug: job_id=0
hp-toolbox(UI)[3504]: debug: title=
hp-toolbox(UI)[3504]: debug: timedate=1330184904.28
hp-toolbox(UI)[3504]: debug: EVENT_HISTORY_UPDATE
(hpfax:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Handling event...
hp-toolbox(UI)[3504]: debug:
device_uri=hpfax:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: printer_name=
hp-toolbox(UI)[3504]: debug: event_code=9011
hp-toolbox(UI)[3504]: debug: username=georg
hp-toolbox(UI)[3504]: debug: job_id=0
hp-toolbox(UI)[3504]: debug: title=
hp-toolbox(UI)[3504]: debug: timedate=1330184904.28
hp-toolbox(UI)[3504]: debug: EVENT_DEVICE_UPDATE_REPLY
(hpfax:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug:
updateDevice(hpfax:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Re-reading CUPS printer queue information.
hp-toolbox(UI)[3504]: debug: updateCurrentTab()
hp-toolbox(UI)[3504]: debug: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hpfax is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug:
updateDevice(hpfax:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Re-reading CUPS printer queue information.
hp-toolbox(UI)[3504]: debug: updateCurrentTab()
hp-toolbox(UI)[3504]: debug: hpfax:/net/Officejet_Pro_8600?zc=dhcppc9:
back_end:hpfax is_hp:True bus:net model:Officejet_Pro_8600 serial:
dev_file: host:dhcppc9 zc:dhcppc9 port:1
hp-toolbox(UI)[3504]: debug: Cleaning up child processes.
hp-toolbox(UI)[3504]: debug: Cleaning up child processes.
hp-toolbox(UI)[3504]: debug: Handling event...
hp-toolbox(UI)[3504]: debug:
device_uri=hp:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: printer_name=
hp-toolbox(UI)[3504]: debug: event_code=9003
hp-toolbox(UI)[3504]: debug: username=georg
hp-toolbox(UI)[3504]: debug: job_id=0
hp-toolbox(UI)[3504]: debug: title=
hp-toolbox(UI)[3504]: debug: timedate=1330184925.39
hp-toolbox(UI)[3504]: debug: EVENT_HISTORY_UPDATE
(hp:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Handling event...
hp-toolbox(UI)[3504]: debug:
device_uri=hp:/net/Officejet_Pro_8600?zc=dhcppc9
hp-toolbox(UI)[3504]: debug: printer_name=
hp-toolbox(UI)[3504]: debug: event_code=9011
hp-toolbox(UI)[3504]: debug: username=georg
hp-toolbox(UI)[3504]: debug: job_id=0
hp-toolbox(UI)[3504]: debug: title=
hp-toolbox(UI)[3504]: debug: timedate=1330184925.39
hp-toolbox(UI)[3504]: debug: EVENT_DEVICE_UPDATE_REPLY
(hp:/net/Officejet_Pro_8600?zc=dhcppc9)
hp-toolbox(UI)[3504]: debug: Unlocking: /home/georg/.hplip/hp-toolbox.lock
georg@zulia:~$

2. Please find the screen shots attached.

3. The printer is connected. If I delete the printer and add it again,
it finds it and it works. But after next reboot, the problem usually
comes again.

Thanks & regards,
Georg Profos

>>
Quoting / Zitat von goutamkk <email address hidden>:

> The HPLIP installation looks fine from the hp-check log. Are you getting
> the same error even now when the device is configured over the network.
> Did you use "hp-setup" command to configure your printer over network ?
>
> If its getting the device communication error please provide us the "hp-
> toolbox -g" command's terminal debug messages..
>
> Thanks,
> Goutam
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/920695
>
> Title:
> HP Device Manager shows Communication Error for no reason
>
> Status in HP Linux Imaging and Printing:
> In Progress
>
> Bug description:
> HPLIP 3.11.12, Ubuntu 11.04 (up to date), HP OfficeJet Pro 8600 Plus.
>
> Every 10 days or so, I start getting "communication errors" displayed
> by the HP Device manager. Experimenting around a bit showed that if I
> delete all my printers (actually just one, but it has a printer and a
> fax in the same device), restart the computer, and add the printer
> again, the printer is recognized correctly and printing works after
> that... for a few days. But this is of course a bit annoying.
>
> Note that printing from Mac OS and Windows XP works without problems.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/hplip/+bug/920695/+subscriptions