cannot run as root anymore: invalid cast from Gtklabel to GnomeCanvas

[Vincent Ladeuil]

Since I upgraded to precise, I cannot use etherape as root anymore:

sudo etherape

libglade-WARNING **: Could not load support for `gnome': libgnome.so: cannot open shared object file: No such file or directory

libglade-WARNING **: Could not load support for `canvas': libcanvas.so: cannot open shared object file: No such file or directory

libglade-WARNING **: unknown widget class 'GnomeMessageBox'

libglade-WARNING **: unknown widget class 'GnomeCanvas'

Gtk-WARNING **: gtk_scrolled_window_add(): cannot add non scrollable widget use gtk_scrolled_window_add_with_viewport() instead

Gtk-CRITICAL **: IA__gtk_style_set_background: assertion `window != NULL' failed

GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `GnomeCanvas'

GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `GnomeCanvas'

GnomeCanvas-CRITICAL **: gnome_canvas_root: assertion `GNOME_IS_CANVAS (canvas)' failed

GnomeCanvas-CRITICAL **: gnome_canvas_item_new: assertion `GNOME_IS_CANVAS_GROUP (parent)' failed
**
ERROR:diagram.c:187:addref_canvas_obj: assertion failed: (obj)

Trying to use it as a regular user outputs:

etherape

libglade-WARNING **: Could not load support for `gnome': libgnome.so: cannot open shared object file: No such file or directory

libglade-WARNING **: Could not load support for `canvas': libcanvas.so: cannot open shared object file: No such file or directory

libglade-WARNING **: unknown widget class 'GnomeMessageBox'

libglade-WARNING **: unknown widget class 'GnomeCanvas'

Gtk-WARNING **: gtk_scrolled_window_add(): cannot add non scrollable widget use gtk_scrolled_window_add_with_viewport() instead

Gtk-CRITICAL **: IA__gtk_style_set_background: assertion `window != NULL' failed

with a dialog reminding me that I need to run as root ;-}

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: etherape 0.9.12-1
ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2
Uname: Linux 3.2.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Wed Feb 1 14:55:24 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64+mac (20110427.1)
SourcePackage: etherape
UpgradeStatus: Upgraded to precise on 2012-01-27 (5 days ago)

[Martin Pitt (pitti)]

Unassigning Canonical desktop team. This is a universe package.

[Sebastien Bacher (seb128)]

try installing libgnomecanvas2-0 libgnome2-0 and see if that does a difference. seems from your output that it tries to load those libraries which are not installed by default nowadays, it should depends on them in it needs them to work correctly

[Vincent Ladeuil (vila)]

> try installing libgnomecanvas2-0 libgnome2-0

libgnome-2-0 (2.32.1-2ubuntu1) and libgnomecanvas2-0 (2.30.3-1ubuntu1) are (and were) both installed (and present in the Dependencies.txt above), so no difference

Anything I can do to help diagnosing, feel free to ask !

[Mathieu Trudel-Lapierre (cyphermox)]

I just tried this on my system and it appears to work fine.

Note that I don't believe running etherape as root is very safe -- since it attempts to parse network traffic (although very simply) it could be the target of malicious traffic; which makes the issues far worse when run by root.

[Vincent Ladeuil (vila)]

@Mathieu: Thanks for the heads-up, it now works for me too.

Running etherape as root is the only way I know to get *something* displayed, running as an ordinary user displays a dialog saying: "No capture device found or insuffiecient privileges...".

Given that I use etherape to get a feeling of what is going on, I'm not really concerned with malicious traffic though... May be I should...