I recently had to reinstall my PC and the problem was gone (I'm still using precise).
I assume that a recent update in kernel or NetworkManager solved the problem: 3.2.0-51-generic #77-Ubuntu SMP Wed Jul 24 20:18:19 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1018933 Title: 1969:1083 NetworkManager does not connect eth0 -- atl1c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1018933/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
