Comment 7 for bug 1455938

goutam, thanks for the quick response. Unfortunately, both the hp-testpage -i and printing from the network failed to print anything. They mimic the original problem in that jobs are stuck in the print queue, and if released, stay in the queue.

hp-levels -i -g

HP Linux Imaging and Printing System (ver. 3.15.4)
Supply Levels Utility ver. 2.0

Copyright (c) 2001-15 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-levels[3191]: debug: getDeviceUri(None, None, ('hp',), None, , True)
hp-levels[3191]: debug: Mode=0
hp-levels[3191]: debug: Cache miss: officejet_5600_series
hp-levels[3191]: debug: Reading file: /usr/share/hplip/data/models/models.dat
hp-levels[3191]: debug: Searching for section [officejet_5600_series] in file /usr/share/hplip/data/models/models.dat
hp-levels[3191]: debug: Found section [officejet_5600_series] in file /usr/share/hplip/data/models/models.dat
hp-levels[3191]: debug: {'hp:/usb/Officejet_5600_series?serial=CN6ABD531H04B2': ['hpwifiprinter']}
Using device : hp:/usb/Officejet_5600_series?serial=CN6ABD531H04B2

hp-levels[3191]: debug: num_pens = 2
hp-levels[3191]: debug: pen 0 {'index': 0, 'kind': 3L, 'level': 63, 'level-trigger': 0, 'health': 0, 'type': 1, 'id': 9}
hp-levels[3191]: debug: pen 1 {'index': 1, 'kind': 0L, 'level': 0, 'level-trigger': 2, 'health': 1, 'type': 0, 'id': 24}

hp-levels[3191]: debug: 1: agent_type 1 agent_kind 3 agent_sku '56 (C6656A) /27 (C8727A)'
Black cartridge
Part No.: 56 (C6656A) /27 (C8727A)
Health: Good/OK

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Done.