I'll post here the same answer that I wrote at https://answers.launchpad.net/ubuntu/+source/knetworkmanager/+question/8140 :
"I found a workaround: make a backup copy of /etc/network/interfaces , open /etc/network/interfaces as root with your favourite text editor and edit it: auto lo iface lo inet loopback address 127.0.0.1 netmask 255.0.0.0 comment out any other line with a #. Restart KDE and KNetworkManager will (hopefully) work fine again." -- KNetworkManager Can't Set "Roaming Mode" https://bugs.launchpad.net/bugs/125767 You received this bug notification because you are a member of Kubuntu Team, which is a bug contact for knetworkmanager in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs