[Bug 918026] 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(...)

[Robert Roth]

*** This bug is a duplicate of bug 946718 ***
    https://bugs.launchpad.net/bugs/946718

** This bug is no longer a duplicate of private bug 875970
** This bug has been marked a duplicate of bug 946718
   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(...)

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https://bugs.launchpad.net/bugs/918026

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:
  New

Bug description:
  when I enter desktop . will show this error.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: update-notifier-common 0.118ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-9.16-generic 3.2.1
  Uname: Linux 3.2.0-9-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.90-0ubuntu2
  Architecture: amd64
  CrashCounter: 1
  Date: Wed Jan 18 13:39:16 2012
  DuplicateOf: https://bugs.launchpad.net/bugs/875970
  ExecutablePath: /usr/lib/update-notifier/backend_helper.py
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120117)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/lib/update-notifier/backend_helper.py add_cdrom /media/Ubuntu\ 11.10\ amd64
  ProcEnviron:
   LANGUAGE=zh_CN:zh
   PATH=(custom, no user)
   LANG=zh_CN.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/lib/update-notifier/backend_helper.py', 'add_cdrom', '/media/Ubuntu 11.10 amd64']
  SourcePackage: update-notifier
  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(...)
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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