crashed with KeyError in detectNetworkDevices()

Bug #519430 reported by Evan Leibovitch on 2010-02-09
This bug affects 4 people
Affects Status Importance Assigned to Milestone
hplip (Ubuntu)

Bug Description

Binary package hint: hplip

Using Lucid Alpha 2

running hp-setup as root (after 'sudo bash')

message of crashing.

Here is what's on the console at the time this happens:

# hp-setup

HP Linux Imaging and Printing System (ver. 3.9.12)
Printer/Fax Setup Utility ver. 9.0

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.

Error: "/var/tmp/kdecache-evan" is owned by uid 1000 instead of uid 0.
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /home/evan/.config/ibus/bus
Bus::open: Can not get ibus-daemon's address.
IBusInputContext::createInputContext: no connection to ibus-daemon
Searching... (bus=net, timeout=5, ttl=4, search=(None) desc=0, method=mdns)
|Traceback (most recent call last):
  File "/usr/share/hplip/ui4/", line 1213, in NextButton_clicked
  File "/usr/share/hplip/ui4/", line 529, in showDevicesPage
    filter_dict,, net_search=net_search_type)
  File "/usr/share/hplip/base/", line 469, in probeDevices
    detected_devices = mdns.detectNetworkDevices(ttl, timeout)
  File "/usr/share/hplip/base/", line 311, in detectNetworkDevices
    y['device1'] = "MFG:Hewlett-Packard;MDL:%s;CLS:PRINTER;" % txt['ty']
KeyError: 'ty'

If "continue" is clicked, crashes again and the above text (from "Searching..." to "KeyError: 'ty'" repeats on the console.

ProblemType: Crash
Architecture: i386
 E [09/Feb/2010:12:41:35 -0500] Unable to remove temporary file "/var/spool/cups/tmp/.hplip" - Is a directory
 E [09/Feb/2010:12:42:37 -0500] Unable to remove temporary file "/var/spool/cups/tmp/.hplip" - Is a directory
 E [09/Feb/2010:13:06:15 -0500] Unable to remove temporary file "/var/spool/cups/tmp/.hplip" - Is a directory
 E [09/Feb/2010:13:21:11 -0500] Unable to remove temporary file "/var/spool/cups/tmp/.hplip" - Is a directory
Date: Tue Feb 9 13:41:47 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/share/hplip/
InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100112.3)
InterpreterPath: /usr/bin/python2.6
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No destinations added.
MachineType: Hewlett-Packard HP Compaq dc7800p Small Form Factor
Package: hplip-data 3.9.12-2ubuntu3
PackageArchitecture: all
Papersize: letter
ProcAttrCurrent: unconfined (enforce)
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-12-generic root=UUID=b2f7b796-7136-4476-ad02-ae45e0418943 ro quiet splash
ProcCmdline: python /usr/bin/hp-setup
 PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.32-12.17-generic
PythonArgs: ['/usr/bin/hp-setup']
SourcePackage: hplip
Title: crashed with KeyError in detectNetworkDevices()
Uname: Linux 2.6.32-12-generic i686
UserGroups: 07/18/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786F1 v01.04
dmi.board.asset.tag: CAC845009X 0AA8h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CAC845009X
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786F1v01.04:bd07/18/2007:svnHewlett-Packard:pnHPCompaqdc7800pSmallFormFactor:pvr:rvnHewlett-Packard:rn0AA8h:rvr:cvnHewlett-Packard:ct4:cvr: HP Compaq dc7800p Small Form Factor
dmi.sys.vendor: Hewlett-Packard

Related branches

Evan Leibovitch (evan-telly) wrote :
tags: removed: need-duplicate-check
Evan Leibovitch (evan-telly) wrote :

Upgraded today to version 3.9.12-2ubuntu4 of hplip. No change in the problem.

visibility: private → public
Doug Holton (edtechdev) wrote :

I see the same error with 3.10.2

mario dejung (other-dejung) wrote :

I found a solution for this issue:

Edit File /usr/share/hplip/base/ around line 311:

#y['device1'] = "MFG:Hewlett-Packard;MDL:%s;CLS:PRINTER;" % txt['ty']
    y['device1'] = "MFG:Hewlett-Packard;MDL:%s;CLS:PRINTER;" % txt['ty']
except KeyError:
    log.debug("NO ty Key in txt: %s" % repr(txt))

Evan Leibovitch (evan-telly) wrote :

Could you please attach the corrected file? I've tried editing the file a dozen ways to add these lines and get a syntax error each time. I'm not familiar with Python indenting style.


Evan Leibovitch (evan-telly) wrote :

Update: after a few more tries, the script now runs and apparently creates the appropriate printer setup. But upon exiting the 'hp-setup' script there is a "Segmentation fault" reported.

mario dejung (other-dejung) wrote :

Ok, this is the file...

mario dejung (other-dejung) wrote :

Hm, I have no problems with Segmentation fault... Sorry...
You can try my file, but I'm sure, it will not fix the SegFault...

Jacques-Olivier Farcy (jakatak) wrote :


I had the same problem :

Ubuntu 10.04, hplip + hplip-gui and key error ...

I used the patch and everything is working good now.


Markus Neteler (neteler) wrote :

The problem continues in hplip-3.11.5. Above fix help, diff attached.
Please fix it upstream.

Changed in hplip (Ubuntu):
status: New → In Progress
Changed in hplip (Ubuntu):
status: In Progress → Fix Committed
milestone: none → ubuntu-11.10-beta-2
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package hplip - 3.11.7-0ubuntu5

hplip (3.11.7-0ubuntu5) oneiric; urgency=low

  * debian/patches/mdns-py-network-printer-search-key-error.dpatch:
    In some cases a search of network printers with the hp-setup utility
    crashed with a key error (LP: #519430).
 -- Till Kamppeter <email address hidden> Thu, 1 Sep 2011 00:42:00 +0200

Changed in hplip (Ubuntu):
status: Fix Committed → Fix Released
Changed in hplip:
status: New → Fix Committed

Fix released in hplip-3.11.10.

Changed in hplip:
status: Fix Committed → Fix Released
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