segmentation fault from gui

[Mark Foster]

Binary package hint: virtualbox-ose

bitpusher@sea-vms2:~$ VirtualBox
Qt WARNING: QGtkStyle was unable to detect the current GTK+ theme.
(GUI appears, then upon clicking File->Preferences...)
Segmentation fault

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu.
Description: Ubuntu 10.04 LTS
Release: 10.04

2) The version of the package you are using, via 'apt-cache policy packagename' or by checking in Synaptic.
virtualbox-ose:
  Installed: 3.1.6-dfsg-2ubuntu2
  Candidate: 3.1.6-dfsg-2ubuntu2
  Version table:
 *** 3.1.6-dfsg-2ubuntu2 0
        500 ftp://10.1.0.13/mirror/ftp.osuosl.org/ubuntu-lucid-current/ lucid/universe Packages
        100 /var/lib/dpkg/status

3) What you expected to happen
I expect the VirtualBox program to run so I can adjust the settings, create new VMs and so on.

4) What happened instead
It crashes before I can do anything useful.

FWIW the same behavior (segmentation fault) occurs using the 3.1.8 package downloaded from virtualbox.org

I am attaching a gzip compressed core file generated as per the instructions at
http://www.virtualbox.org/wiki/Core_dump

[Mark Foster (fostermarkd)]

bitpusher@sea-vms2:~$ /usr/bin/qtconfig-qt4
QGtkStyle was unable to detect the current GTK+ theme.
Segmentation fault

However, xeyes works after installing x11-apps package.
Note that this is over a SSH forwarded session (using -Y argument to ssh)

[Felix Geyer (debfx)]

Reassigning to Qt as it seems to be a problem with QGtkStyle.

[Ole Laursen (olau)]

I had a similar problem. It turns out QGtkStyle tries to discover the theme with GConf, found that out by strace'ing qtconfig-qt4.

So I installed gconf-editor to pull in GConf, then it worked. I agree it's a bug in QGtkStyle - at the very least, it should spit out that it can't load GConf.

[Chris Bainbridge (chris-bainbridge)]

To reproduce: Install lucid-amd64-server.iso, install virtualbox-ose-qt, run virtualbox, click new.

$ virtualbox
Qt WARNING: QGtkStyle was unable to detect the current GTK+ theme.

(process:3655): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:3655): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(process:3655): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:3655): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:3655): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:3655): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:3655): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:3655): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:3655): Gtk-CRITICAL **: gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed

Installing gconf-editor fixed the problem. (I guess this package is installed by default in a desktop ISO, hence the problem only occurs in a server install)

[Melroy van den Berg (webmaster-web-share)]

Yep I got it with the program called GTK Radiant (it's a map editor):

(radiant.bin:4747): Gdk-CRITICAL **: gdk_window_get_window_type: assertion `GDK_IS_WINDOW (window)' failed
I/O warning : failed to load external entity "/home/melroy/ZeroRadiant/global.xlink"
I/O warning : failed to load external entity "/home/melroy/ZeroRadiant/installs/UrTPack/game/game.xlink"
I/O warning : failed to load external entity "/home/melroy/ZeroRadiant/installs/Q3Pack/game/game.xlink"
Gdk-CRITICAL **: gdk_window_get_window_type: assertion `GDK_IS_WINDOW (window)' failed

Segmentation fault

Wat to do?

Program just crashed.

[Diego D'Onofrio (ddonofrio)]

As Chris Bainbridge describes, I have reproduced this issue.

[George Poulson (george-poulson)]

Also occurs in mythtv:

2010-09-21 09:31:15.391 MythUIWebBrowser: Loading css from - file:///usr/share/mythtv/themes/default/htmls/mythbrowser.css

(process:1661): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.24.1/gobject/gtype.c:2706: You forgot to call g_type_init()

(process:1661): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

[valkyr (locki)]

Package "software-properties-gtk" solves these "CRITICAL" warnings.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.