ubuntu-bug crashes with a long list of GTK errors - X permissions should be checked

[Cefn]

I had a freeze of gnome-shell, and gathered an apport report from the command-line on TTY1

I then recovered gnome-shell like...
kill -9 `pidof gnome-shell`
export DISPLAY=:0
gnome-shell --replace

Then when I tried to report the bug via...

sudo ubuntu-bug /tmp/apport.gnome-shell.n6si7l.apport

...I could briefly see a report that it couldn't access the X display, and followed by many pages of errors like...

(apport-gtk:18921): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed
(apport-gtk:18921): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed
(apport-gtk:18921): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed
(apport-gtk:18921): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed
(apport-gtk:18921): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

...followed by Segmentation fault (core dumped)

This was fixed by running...
xhost +local:root
...after which ubuntu-bug would properly load and run (hence this bug report).

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: apport-gtk 2.12.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.11.0-3.6-generic 3.11.0-rc6
Uname: Linux 3.11.0-3-generic i686
ApportVersion: 2.12.1-0ubuntu2
Architecture: i386
Date: Wed Aug 21 09:35:47 2013
InstallationDate: Installed on 2013-08-15 (5 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 (20130626)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: apport
UpgradeStatus: No upgrade log present (probably fresh install)

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for apport (Ubuntu) because there has been no activity for 60 days.]