Network is not connecting,
I get the error message
(1) Creating object for path '/org/freedesktop/NetworkManager/ActivationConnection/4' failed in libnm-glib.
This is a common problem in ubuntu 15.04
dsl connection.
One solution is to re-install the pppoe
package as follows:
sudo apt-get install pppoe
And choose default
.
Let me know if this solution not solved your problem.
I had this problem as well. What fixed it for me was removing and re-installing NetworkManager as described in this Ubuntu forums post.
sudo apt-get install -d --reinstall network-manager network-manager-gnome
sudo apt-get purge network-manager network-manager-gnome
Reboot.
sudo apt-get install network-manager-gnome
You will of course require an internet connection for this. For me rebooting temporarily solved the issue (long enough for me to complete the reinstallation) or you could try using an ethernet connect or copying the packages from another computer.