Bug#683338: gdm3: no prompt anymore after login cancel using disable_user_list

[Salvatore Bonaccorso]

Hi GNOME Maintainers

On Mon, Jul 30, 2012 at 11:54:28PM +0200, Jonathan Michalon wrote:
> Package: gdm3
> Version: 3.4.1-2
> Severity: important
> 
> When disable_user_list is activated, entering an username and then cancelling
> login (when prompted for the password) results in an empty unusable greeter.
> Only solution would be to reboot using the button or restart from console. 
> 
> It seems not to affect people without disable_user_list.
> 
> In :1-greeter.log I found this:
> gdm-simple-greeter[32019]: CRITICAL: get_column_number: assertion `i < gtk_tree_view_get_n_columns (treeview)' failed
> 
> A screenshot showing the emptiness may be found here:
> http://misc.michalon.eu/GDM-Screenshot.png

We are seeing the same here at our environment, where showing the
user list is not really practicable.

But the problem does not seem only present when disabling the user
listing. Even with disable_user_list=false, after cancelling a login,
the greeter gets confused and it's not possible anymore to scroll the
user list shown.

Regards,
Salvatore