Bug#775312: system-config-printer: Aborts after not finding printer driver

[Dominik George]

Package: system-config-printer
Version: 1.4.6-1
Severity: important

When trying to install a new printer for which no driver can be found,
system-config-printer aborts in a failing assertion:

$ LC_ALL=C system-config-printer
No ID match for device socket://192.168.178.48:
MFG:Samsung;MDL:CLX-3180 Series;CMD:SPLC,PCL5E,PCL6,FWV,DCU,EXT,FAX;
No ID match for device socket://192.168.178.48:9100:
MFG:Samsung;MDL:CLX-3180 Series;CMD:SPLC,PCL5E,PCL6,FWV,DCU,EXT,FAX;
[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
python: ../../src/xcb_io.c:179: dequeue_pending_request: Assertion !xcb_xlib_unknown_req_in_deq' failed.


-- System Information:
Debian Release: 8.0
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages system-config-printer depends on:
ii  gir1.2-gdkpixbuf-2.0       2.31.1-2+b1
ii  gir1.2-glib-2.0            1.42.0-2.2
ii  gir1.2-gtk-3.0             3.14.5-1
ii  gir1.2-notify-0.7          0.7.6-2
ii  gir1.2-packagekitglib-1.0  1.0.1-2
ii  gir1.2-pango-1.0           1.36.8-3
ii  gnome-icon-theme           3.12.0-1
ii  python-cairo               1.8.8-1+b2
ii  python-cups                1.9.63-1
ii  python-cupshelpers         1.4.6-1
ii  python-dbus                1.2.0-2+b3
ii  python-gi                  3.14.0-1
ii  python-gobject-2           2.28.6-12+b1
ii  python-libxml2             2.9.1+dfsg1-4
pn  python:any                 <none>

Versions of packages system-config-printer recommends:
ii  cups-pk-helper              0.2.5-2+b1
ii  gir1.2-gnomekeyring-1.0     3.12.0-1+b1
ii  python-smbc                 1.0.15.3-0.1
ii  system-config-printer-udev  1.4.6-1

Versions of packages system-config-printer suggests:
pn  gnome-packagekit-session  <none>

-- no debconf information