gnome-control-center segfault on network printer add

[Henry H. Snow]

When trying to add a network printer, gnome-control-center will segfault. Steps to reproduce:

1) Open gnome-control-center, click "Printers".
2) Click "Add New Printer"
3) Wait for network printers to populate the list
4) Select printer, eg FS-C5150DN, click "Add".
5) segfault (or presented with "Printers" is not responding force quit dialogue)

This is not limited to just a Kyocera printer, Brother and HP both

If I run from the command line:
:~$ gnome-control-center

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): printers-cc-panel-WARNING **: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/scp-dbus-service exited with status 1

(gnome-control-center:4960): GLib-GIO-CRITICAL **: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed

(gnome-control-center:4960): printers-cc-panel-WARNING **: Failed to get session bus: (null)

(gnome-control-center:4960): printers-cc-panel-WARNING **: Installation of the new printer failed.
Segmentation fault (core dumped)

I'll spin up a vm w/ a clean install to confirm.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: gnome-control-center 1:3.6.3-0ubuntu43
ProcVersionSignature: Ubuntu 3.11.0-12.18-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
Date: Wed Oct 9 13:11:17 2013
InstallationDate: Installed on 2013-10-01 (8 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Beta amd64 (20130930)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center: deja-dup 27.3.1-0ubuntu1
---
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
DistroRelease: Ubuntu 13.10
InstallationDate: Installed on 2013-10-09 (0 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Beta amd64 (20131009)
MarkForUpload: True
Package: gnome-control-center 1:3.6.3-0ubuntu43
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.11.0-12.18-generic 3.11.3
Tags: saucy
Uname: Linux 3.11.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
usr_lib_gnome-control-center: deja-dup 27.3.1-0ubuntu1

[Henry H. Snow (hhsnow)]

confirming that this occurs with a fresh install of ubuntu gnome nightly (09-Oct-2013 15:48) with package upgrade

[Henry H. Snow (hhsnow)]

apport information

[Till Kamppeter (till-kamppeter)]

Tim, can you have a look?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Henry H. Snow (hhsnow)]

As of these versions, gnome-control-center and system-config-printer no longer segfault on printer add. I receive an error popup "Failed to add new printer." instead. I'm also able to add discovered network printers via system-config-printers (even though it takes about 5 minutes to do driver lookups). No crash is good!

gnome-control-center:
  Installed: 1:3.6.3-0ubuntu44
system-config-printer-gnome:
  Installed: 1.4.2+20130920-0ubuntu1

Would you prefer this bug be resolved and a new one opened for the printer install errors, or leave this one open?

[Jiri Popelka (jpopelka)]

I've just noticed the looong driver lookup on Fedora too and I found this in debug output:
(<class 'pycurl.error'>, error(7, 'Failed connect to www.openprinting.org:443; Connection timed out')

[Till Kamppeter (till-kamppeter)]

www.openprinting.org is temporarily down. Currently a new server will get set up for it and in the next days it should get working again. Sorry for the inconvenience.