system-config-printer.py crashed with AttributeError in send_reply()

Lucid Daily patched to current 28-2-2010. Clean install from 27-2-2010. CUPS 1.4.2-9 has one printer installed. (HP Color Laser 2550)

From within Gnome;
Open Printing applet.
Add new printer to open "new Printer" applet. (Button or menu makes no difference)
Expand "Network Printer" options.
Hit Cancel to close applet.
Crash is repeatable.

(From my bug, 529517. Do not know how I missed the dupe...)

it's affected me too. first of all, i try to print a pdf file in a custom file size, and my R230 Epson printer kind of freezing. then i delete the printer in the printing device list. I turn it off, and then turn it on again. Lucid auto-detected the printer and this bug came up.

here is my syslog:

Mar 25 09:23:04 dagonet udev-configure-printer: add /devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0
Mar 25 09:23:04 dagonet udev-configure-printer: parent devpath is /devices/pci0000:00/0000:00:1d.2/usb4/4-1
Mar 25 09:23:04 dagonet udev-configure-printer: Device vendor/product is 04B8:0005
Mar 25 09:23:04 dagonet udev-configure-printer: add /devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/usb/lp0
Mar 25 09:23:04 dagonet bluetoothd[1013]: probe failed with driver input-headset for device /org/bluez/1009/hci0/dev_00_1C_A4_E0_97_D9
Mar 25 09:23:04 dagonet bluetoothd[1013]: probe failed with driver input-headset for device /org/bluez/1009/hci0/dev_17_76_57_B3_66_01
Mar 25 09:23:04 dagonet bluetoothd[1013]: Adapter /org/bluez/1009/hci0 has been enabled
Mar 25 09:23:04 dagonet udev-configure-printer: failed to claim interface
Mar 25 09:23:04 dagonet udev-configure-printer: invalid or missing IEEE 1284 Device ID
Mar 25 09:23:04 dagonet udev-configure-printer: parent devpath is /devices/pci0000:00/0000:00:1d.2/usb4/4-1
Mar 25 09:23:04 dagonet udev-configure-printer: MFG:EPSON MDL:Stylus Photo R230 SERN:- serial:L24P10708102137110
Mar 25 09:23:05 dagonet ntpdate[1002]: step time server 91.189.94.4 offset 0.556781 sec
Mar 25 09:23:06 dagonet kernel: [ 15.655443] usb 4-1: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
Mar 25 09:23:06 dagonet hp[1132]: io/hpmud/pp.c 627: unable to read device-id ret=-1
Mar 25 09:23:06 dagonet init: plymouth-stop pre-start process (1148) terminated with status 1
Mar 25 09:23:08 dagonet udev-configure-printer: URI matches without serial number: usb://EPSON/Stylus%20Photo%20R230
Mar 25 09:23:08 dagonet udev-configure-printer: No serial number URI matches so using those without
Mar 25 09:23:08 dagonet udev-configure-printer: URI of print queue: usb://EPSON/Stylus%20Photo%20R230, normalized: epson stylus photo r230
Mar 25 09:23:08 dagonet udev-configure-printer: URI of detected printer: usb://EPSON/Stylus%20Photo%20R230, normalized: epson stylus photo r230
Mar 25 09:23:08 dagonet gdm-session-worker[1163]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Mar 25 09:23:09 dagonet anacron[1191]: Anacron 2.3 started on 2010-03-25
Mar 25 09:23:09 dagonet anacron[1191]: Normal exit (0 jobs run)
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Sucessfully called chroot.
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Sucessfully dropped privileges.
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Sucessfully limited resources.
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Running.
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Watchdog thread running.
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Canary thread running.
Mar 25 09:23:09 dagonet polkitd[1177]: started daemon version 0.96 using authority implementation `local' version `0.96'
Mar 25 09:23:09 dagonet rtkit-daemon[1200]: Sucessfully made thread 119...

Tim, do you have any idea to fix this bug?

Does 6e3f61a fix it?

This bug was fixed in the package system-config-printer - 1.1.17+20100217-0ubuntu4

---------------
system-config-printer (1.1.17+20100217-0ubuntu4) lucid; urgency=low

  * debian/patches/53_fix-async-ipp-traceback.patch: Fixed traceback in
    asyncipp (LP: #520466).

  * debian/patches/67_udev_configure_printer_match_usblp_libusb_and_hplip_uris.patch:
    Updated patch to make udev-configure-printer also match queues with
    non-standard CUPS backends using URIs with /dev/usb/lp* as device reference
    with detected printers. With this we avoid that additional queues with
    standard backends get auto-created.
 -- Till Kamppeter <email address hidden> Thu, 25 Mar 2010 12:32:50 +0100

Tim, thank you very much, I have applied your fix now.

It's not fixed! I can't get anything from printer but keep getting this error message not metter what I do. And yes, I have latest version of system-config-printer.

Robert, do you really have the -0ubuntu4 version of system-config-printer (or later)?

Tim, are you sure that your suggested fix also covers this problem?

Listing shows the following:

dpkg -l | grep system-config-printer

ii system-config-printer-common 1.1.17+20100217-0ubuntu4 Printer configuration GUI
ii system-config-printer-gnome 1.1.17+20100217-0ubuntu4 Printer configuration GUI
ii system-config-printer-udev 1.1.17+20100217-0ubuntu4 Printer auto-configuration facility based on

Oh, and I'm on 32 bit Lucid, starting with beta 1.

I checked also machine at work where I print a lot and it says:

ii system-config-printer-common 1.1.17+20100217-0ubuntu3 Printer configuration GUI
ii system-config-printer-gnome 1.1.17+20100217-0ubuntu3 Printer configuration GUI
ii system-config-printer-udev 1.1.17+20100217-0ubuntu3 Printer auto-configuration facility based on

Now I'm afraid to update there because I need printing much more than at home :-)

yeah I have the last system-config-printer-common 1.1.17+20100217-0ubuntu4 version, but i have the problem yet....confirm no fixed

I fixed the problem....I downloaded the system-config-system 1.2.0 version from here http://cyberelk.net/tim/data/system-config-printer/1.2/ and compiled in my lucid lynx ubuntu system.
I'm just using a Hp 1315 printer with a print server by wireless connection I hope you can fix the problem with this workaround :)
Ivan

sorry downloaded system-config-printer 1.2.0 my version now installed

For me this problem also still occurs, giving the traceback on the terminal from which I have started system-config-printer and an incomplete list of detected network printers. I am using the -0ubuntu6 version which has Tim's patch applied.

Ivan, thank you for your suggestion, but as we are currently after Feature Freeze we cannot switch to a completely new version of system-config-printer. We need a patch to only fix this bug.

Tim, the bug happens when clicking on "Add" in the main windoow and in the wizard which appears then on the "+" at "Network Printer". The list of detected printers gets incomplete and the following appears in the terminal where system-config-printer was started:

  File "/usr/share/system-config-printer/asyncipp.py", line 193, in send_reply
    self._reply_handler (self._conn, result)
  File "/usr/share/system-config-printer/asyncpk1.py", line 125, in _ipp_reply_handler
    self._client_reply_handler (self._conn, *args)
  File "/usr/lib/pymodules/python2.6/cupshelpers/cupshelpers.py", line 564, in _reply_handler
    for uri, data in devices.iteritems():
AttributeError: 'NoneType' object has no attribute 'iteritems'

Another reproducable crash:

till@till:~/ubuntu/system-config-printer$ system-config-printer --setup-printer="file:/tmp/printout" --devid='MFG:XXX;MDL:YYY;CMD:PCL5e;'
ERROR:dbus.proxies:Introspect error on :1.47:/org/freedesktop/PackageKit: dbus.exceptions.IntrospectionParserException: Error parsing introspect data: <class 'xml.parsers.expat.ExpatError'>: unbound prefix: line 5, column 4
Traceback (most recent call last):
  File "/usr/share/system-config-printer/asyncipp.py", line 192, in send_reply
    if self._reply_handler:
AttributeError: '_IPPConnectionThread' object has no attribute '_reply_handler'
till@till:~/ubuntu/system-config-printer$ system-config-printer --setup-printer="file:/tmp/printout" --devid='MFG:XXX;MDL:YYY;CMD:PCL5e;'
ERROR:dbus.proxies:Introspect error on :1.47:/org/freedesktop/PackageKit: dbus.exceptions.IntrospectionParserException: Error parsing introspect data: <class 'xml.parsers.expat.ExpatError'>: unbound prefix: line 5, column 4
Traceback (most recent call last):
  File "/usr/share/system-config-printer/asyncipp.py", line 192, in send_reply
    if self._reply_handler:
AttributeError: '_IPPConnectionThread' object has no attribute '_reply_handler'

Can you try 978156d to see if that fixes it?

Bug still in 1.1.17+20100217-0ubuntu6, trying to attach to a Canon LBP5000 physically attached to a winxp box through samba.

Can find the printer, can verify without problem, when clicking "Forward" it starts "Searching for drivers" and then dies

This bug was fixed in the package system-config-printer - 1.1.17+20100217-0ubuntu7

---------------
system-config-printer (1.1.17+20100217-0ubuntu7) lucid; urgency=low

  * debian/patches/70_more-async-traceback-fixes.patch: Fixed several
    tracebacks in the async code (LP: #520466).
 -- Till Kamppeter <email address hidden> Fri, 26 Mar 2010 17:50:50 +0100

Tim, thank you for your patches, now the tracebacks do not appear for me any more.

No problem. Actually I found another bug and fixed it upstream. It's the reason the original (incorrect) fix caused such a major regression. Take a look at commit 40faef5.

Do I have to apply this one, too?

For me the same crash when starting system-config-printer: In terminal:

maliers@maliers-desktop:~$ system-config-printer
Traceback (most recent call last):
  File "/usr/share/system-config-printer/asyncipp.py", line 193, in send_reply
    self._reply_handler (self._conn, result)
  File "/usr/share/system-config-printer/asyncpk1.py", line 125, in _ipp_reply_handler
    self._client_reply_handler (self._conn, *args)
  File "/usr/lib/pymodules/python2.6/cupshelpers/cupshelpers.py", line 564, in _reply_handler
    for uri, data in devices.iteritems():
AttributeError: 'NoneType' object has no attribute 'iteritems'

my version is up to date: 1.1.17+20100217ubuntu6

Tim, thanks for the patch, I have applied it in -0ubuntu8 now.

Schorsch, you need at least -0ubuntu7 (from today).

Oh man what's wrong withe me? The newest version synaptic is showing after updating the paket-list is 0ubuntu6.
What i've got to do. Do I need more sources? Am I right, that it is indifferent that I got a 32bit version?
What's the exact name of the needed pack?

Ok I found it here: https://launchpad.net/ubuntu/+source/system-config-printer/1.1.17+20100217-0ubuntu7/+build/1583088 . I thought "fix released" means that it is in the repository. Sorry

ok i unpluged my printer from usb then deleted my printer. then i pluged back in the printer and it started working. hope this helps out at least a little bit.

I can confirm it's working now :-)
But I had to delete existing printer and set up a new one.
Thanks!!!