[Bug 946718] Re: backend_helper.py crashed with RuntimeError in add_signal_receiver(): To make asynchronous calls, receive signals or export objects, D-Bus connections must be attached to a main loop by passing mainloop=... to the constructor or calling dbus.set_default_main_loop(...)

[Launchpad Bug Tracker]

This bug was fixed in the package update-notifier - 0.119ubuntu8.6

---------------
update-notifier (0.119ubuntu8.6) precise-proposed; urgency=low

  * Tell python-dbus to use glib's mainloop so it doesn't throw an exception
    (LP: #946718).
 -- Michael Terry <mterry at ubuntu.com>   Fri, 07 Sep 2012 09:34:15 -0400

** Changed in: update-notifier (Ubuntu Precise)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/946718

Title:
  backend_helper.py crashed with RuntimeError in add_signal_receiver():
  To make asynchronous calls, receive signals or export objects, D-Bus
  connections must be attached to a main loop by passing mainloop=... to
  the constructor or calling dbus.set_default_main_loop(...)

Status in “update-notifier” package in Ubuntu:
  Fix Released
Status in “update-notifier” source package in Precise:
  Fix Released

Bug description:
  [Impact]
  This is one of the top-reported bugs on error.ubuntu.com.  It seems to occur when you've inserted an Ubuntu CD and started the package manager.

  [Test Case]
  sudo apt-get remove synaptic
  /usr/lib/update-notifier/backend_helper.py add_cdrom test

  [Regression Potential]
  I think very low.  The only affected code path is right before this crashes unconditionally anyway.  So even if this screws something up, it can't make it worse.  We import a module from python-dbus, but we already were using python-dbus, so dependencies and module use aren't changing.

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