I could fix this problem. Any interface managed by NetworkManager shouldn't be stated in the /etc/network/interfaces file.
@litmotiv: just remove these lines and network manager should bring up the interface again. ** Changed in: network-manager (Ubuntu) Status: Incomplete => Invalid -- Network-Manager doesn't initially connect to wired network https://bugs.launchpad.net/bugs/133374 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs