[Bug 878109] Re: Can't edit or remove software sources

[Robert Roth]

*** This bug is a duplicate of bug 820150 ***
    https://bugs.launchpad.net/bugs/820150

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug #820150, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.

** This bug is no longer a duplicate of bug 821050
   Error calling page after update to 1.2.2
** This bug has been marked a duplicate of bug 820150
   software-properties-gtk crashed with AttributeError in remove_source(): 'NoneType' object has no attribute 'file'

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https://bugs.launchpad.net/bugs/878109

Title:
  Can't edit or remove software sources

Status in “software-properties” package in Ubuntu:
  New

Bug description:
  The following message is shown when a software source is attempted to
  be removed. The software source is not removed successfully.

  Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 839, in on_remove_clicked
      self.backend.RemoveSource(str(source_entry))
    File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 143, in __call__
      **keywords)
    File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 630, in call_blocking
      message, timeout)
  dbus.exceptions.DBusException: org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/dbus/service.py", line 702, in _message_cb
      retval = candidate_method(self, *args, **keywords)
    File "/usr/lib/python2.7/dist-packages/softwareproperties/dbus/SoftwarePropertiesDBus.py", line 269, in RemoveSource
      self.remove_source(source.encode("utf-8"))
    File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 711, in remove_source
      if source.file != apt_pkg.config.find_file("Dir::Etc::sourcelist"):
  AttributeError: 'NoneType' object has no attribute 'file'

  Also, any changes attempted to the source is not applied.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: software-properties-gtk 0.81.10
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  Date: Wed Oct 19 07:23:22 2011
  ExecutablePath: /usr/bin/software-properties-gtk
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007.1)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-properties
  UpgradeStatus: Upgraded to oneiric on 2011-09-23 (25 days ago)

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