Description of problem:

When gsmartcontrol is started fom the menu, Only the blinking icon is activated during 20s.

If gsmartcontrol is started from a root console,  gsmartcontrol works fine.
If gsmartcontrol is started from a user console, the root passwd is asked and gsmartcontrol works fine.

It seems that gsmartcontrol cannot ask the root passwd.

From a console, I get these warnings:
$ gsmartcontrol
You are attempting to run a command which requires administrative
privileges, but more information is needed in order to do so.
Authenticating as "root"
Mot de passe : 
Gtk-Message: Failed to load module "canberra-gtk-module"
<warn>  [hz] Warning: exit: Device open failed, or device did not return an IDENTIFY DEVICE structure.
<warn>  [app] execute_smartctl(): Error while executing smartctl binary.
<warn>  [app] StorageDevice::execute_device_smartctl(): Error while executing smartctl binary.
<warn>  [hz] FS warning: Unable to check if a path "/home/pierre/.config/gsmartcontrol/gsmartcontrol.conf" points to directory: Aucun fichier ou dossier de ce type.
$


Reproducible: 

Steps to Reproduce: