I've been having similar problems after an upgrade, specifically no wired connections can be managed in nm-configuration-editor.
I found that by removing old (stale) config information from /etc/network/interfaces and rebooting nm-configuration-editor seemed to work normally. I removed all lines from /etc/network/interfaces except for the following (you probably dont want to do this if you have a complicated config!). auto lo iface lo inet loopback -- nm-connection-editor throws tons of errors https://bugs.launchpad.net/bugs/299900 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
