This is not a bug. NetworkManager is meant to ignore interfaces configured in /etc/network/interfaces.
To use NetworkManager to manager eth0; simply drop these lines from /etc/network/interfaces: auto eth0 iface eth0 inet dhcp ** Changed in: network-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/994605 Title: Unmanaged Device found; state CONNECTED forced.(wired) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/994605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs