Network connections window is empty (still have network access)

[darkcape]

Running Ubuntu 12.04

Last week for some reason my network Connections app has stopped working correctly. If looking at it there are no entries in any of the tabs. I still have access to the the network and internet and get a DHCP address and information is populated in ifconfig.

though the settings and network I see information populated but the options button is greyed out.

I would however like to get this working together as I cannot create any VPN connections through the Network connections or through the network settings windows always coming up with the error: (connection add failed: Connection not visible or not available)

I have tried removing packages and bring them back to no avail I've also tried different Desktop managers (Cinnamon, Gnome 2D, and KDE) and all seem to have the same issue as Unity.

currently working around the VPN connections with using a virtual box and sharing folders inside of it but I'd rather have full control of my network.

Thanks in advance.

[Sergius14]

Sometimes I see the similar failure. It is unfrequent but happens once a while.

What I do to solve this is to kill the process and run it again from console.

killall nm-applet

./nm-applet&

(you can close the console and the applet shoud be still running).


It is so unfrequent and after several days suspending the laptop that I just do this to fix it.

[darkcape]

Thanks for the reply.

not a fix for me though instead I get the following output (try looking for fixes for the beginning errors but most go to bug reports that I have no clue how to work through) :

Ubuntu 12.04:~$killall nm-applet
Ubuntu 12.04:~$nm-applet&
[1] 3388
Ubuntu 12.04:~$Gtk-Message: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.
** Message: applet now removed from the notification area

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

not sure if anyone could find this helpful but since I had the process window still open I get the following when trying to add a new connection.

Gtk-Message: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

** (nm-connection-editor:5951): WARNING **: Invalid setting VPN: gateway

** (nm-connection-editor:5951): WARNING **: Invalid setting VPN: gateway

** (nm-connection-editor:5951): WARNING **: Invalid setting VPN: gateway

(nm-applet:3388): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-applet:3388): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-applet:3388): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-GIO-CRITICAL **: g_async_initable_real_init_finish: assertion `g_simple_async_result_is_valid (res, G_OBJECT (initable), g_async_initable_real_init_async)' failed

** (nm-connection-editor:5951): CRITICAL **: dbus_g_error_has_name: assertion `error != NULL' failed

(nm-connection-editor:5951): GLib-CRITICAL **: g_error_free: assertion `error != NULL' failed

[darkcape]

looking a little closer to some of the errors I went to view what was in /etc/NetworkManager/system-connections/ and found a bunch items in there and I can tell that they were my failed attempts at setting up other network connections.

if I remove them all. I can see that the main network connection vanishes and goes to off. But is quickly rebuilt after changing it to on again.

[Sergius14]

it is very strange, seams to have a file or something corrupted.

You can try reinstalling network manager.

try it from console with purge instead of remove (delete configuration files while remove keep it)

sudo apt-get purge network-manager

I sugges a reboot (just in case, to be clean).

and to reinstall it

sudo apt-get install network-manager


And see whats happens,.

[darkcape]

Thanks again,

un-installed and reinstalled still no love.

FYI anyone following along make sure you download the network-manager files before removing as this will disable any networking you do have working.

thinking it might be time to go for a full blown re-installation in the near future.

[lUomino]

Sometimes I see the similar failure. It is unfrequent but happens once a while.

What I do to solve this is to kill the process and run it again from console.

killall nm-applet
./nm-applet&

(you can close the console and the applet shoud be still running).

It is so unfrequent and after several days suspending the laptop that I just do this to fix it.

I, too, encounter this problem after my machine (running Ubuntu 12.04, gnome, fully patched) has been running several days, with at least one suspend/resume per day.

It's not troubling enough to me to reconfigure gnome, so I've instead implemented a daily cronjob to reload nm-applet. However, it would be nice to get this fixed, since it's most probably a buffer overwrite or similar someplace.

One caveat for our less-experienced correspondents: nm-applet is in /usr/bin, so './nm-applet &' above will work only if your working directory is /usr/bin. A more general solution is 'nm-applet &'.

I'll probably be upgrading to 12.10 this weekend. so I'll report back if this problem is fixed in 12.10.

[lUomino]

I, too, encounter this problem after my machine (running Ubuntu 12.04, gnome, fully patched) has been running several days, with at least one suspend/resume per day.

It's not troubling enough to me to reconfigure gnome, so I've instead implemented a daily cronjob to reload nm-applet. However, it would be nice to get this fixed, since it's most probably a buffer overwrite or similar someplace.

One caveat for our less-experienced correspondents: nm-applet is in /usr/bin, so './nm-applet &' above will work only if your working directory is /usr/bin. A more general solution is 'nm-applet &'.

I'll probably be upgrading to 12.10 this weekend. so I'll report back if this problem is fixed in 12.10.

I upgraded last Wednesday and stopped the cron job. Since then, I've put the machine to sleep and woken it up at least daily. Throughout, nm-applet has continued to work, so I'm calling this fixed, at least for me.

[lUomino]

Alas, it appears that the problem still exists. So, I've re-enabled the cronjob and await a fix.