Here I found someone with a similar problem: http://www.linuxquestions.org/questions/showthread.php?p=2690333#post2690333
He also mentiones that starting Windows helps is (hard) resetting the NIC. -- RTL8139 NIC doesn't work if no cable is connected at boot-time https://bugs.launchpad.net/bugs/123358 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
