Similar fix worked in my setup (Ubuntu 12.04 64-bit server install, with xubuntu-desktop), with slightly different file name.
Make backup of /etc/NetworkManager.conf Edit /etc/NetworkManager.conf (as root). After "managed," change "false" to "true" sudo service network-manager restart Thank you! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/305606 Title: NetworkManager applet says "No valid active connections found!" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/305606/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs