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[Amr Ibrahim <1115653@xxxxxxxxxxxxxxxxxx>]

** Changed in: gnome-control-center (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1115653

Title:
  GNOME Printer Setup Tool: Printers are discovered only through a hard-
  coded list of CUPS backends

Status in GNOME Control Center:
  Fix Released
Status in gnome-control-center package in Ubuntu:
  Fix Released

Bug description:
  For development of printing infrastructure I use a test CUPS backend
  (attached, to be installed in /usr/lib/cups/backend/ and to be made
  executable) reporting printers as detected which in reality do not
  exist, so that I do not need the actual printer models for the test.
  Other users use manufacturer-supplied printer drivers which bring
  their own CUPS backends, and Ubuntu also ships the "hpfax" backend
  which is not in the hard-coded list.

  The source code of gnome-control-center, file panels/printers/pp-
  utils.c contains

  ----------
  [...]
  static void
  get_device_attributes_async_scb (GHashTable *result,
                                   gpointer    user_data)
  {
    [...]
    const gchar     *backends[] =
      {"hpfax", "ncp", "beh", "bluetooth", "snmp",
       "dnssd", "hp", "ipp", "lpd", "parallel",
       "serial", "socket", "usb", NULL};
    [...]
  ----------

  and tests show that the tool is actually only discovering printers
  through these backends. It is easy to make CUPS using all backends for
  detecting printers, one can do it by a single function call. Other
  printer setup tools do it this way and I expect gnome-control-center
  to also use all CUPS backends, so that users who use special backends
  can set up their printers.

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