[Bug 896836] Re: Segmentation fault when asking help() for the list of modules

Robert Jamison 896836 at bugs.launchpad.net
Thu Dec 8 16:55:22 UTC 2011


After installing matplotlib from the default oneiric repos, I was also
getting the exact error in Bug Description above while executing help()
modules.  Also I was unable to 'import gtk'.  Installing gtk2-engines-
pixbuf changed the above error to this:


python2.7.2
import gtk
help()
modules
>
/usr/lib/python2.7/dist-packages/Onboard/__init__.py:2: Warning: cannot register existing type `GdkDisplayManager'
  import osk
/usr/lib/python2.7/dist-packages/Onboard/__init__.py:2: Warning: g_once_init_leave: assertion `initialization_value != 0' failed
  import osk
/usr/lib/python2.7/dist-packages/Onboard/__init__.py:2: Warning: g_type_register_static: assertion `parent_type > 0' failed
  import osk
/usr/lib/python2.7/dist-packages/Onboard/__init__.py:2: Warning: g_object_new: assertion `G_TYPE_IS_OBJECT (object_type)' failed
  import osk

....hung process

FWIW

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https://bugs.launchpad.net/bugs/896836

Title:
  Segmentation fault when asking help() for the list of modules

Status in “python2.7” package in Ubuntu:
  Confirmed

Bug description:
  Using Python 2.7.2 on Oneiric (package version is 2.7.2-7ubuntu2), I'm
  getting a consistent segmentation fault when I open the interactive
  help in a Python shell (i.e. typing "help()" in the shell) and then
  ask for the list of modules (by typing "modules").

  The error code returned is as follows:
  Please wait a moment while I gather a list of all available modules...

  /usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
    import gobject._gobject
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
    from gtk import _gtk

  ** (python:5116): CRITICAL **: pyg_register_boxed: assertion `boxed_type != 0' failed
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: cannot register existing type `GdkDevice'
    from gtk import _gtk
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertion `node != NULL' failed
    from gtk import _gtk
  Segmentation fault

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