Thanks Paul Liu for some updating. If eth0 in /etc/network/interfaces, it means root (via scripts in /etc/init.d) is going to start dhclient for eth0, and NetworkManager will not touch the interface. For server, this is a very important feature because we would like to have network connection before any user login.
So, two questions are raised. 1. why installer (or other application) update /etc/network/interfaces with Desktop version? 2. why booting scripts do not bring up dhclient? Keeping digging. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/827491 Title: [Inspiron N7110] Ethernet is unmanaged To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/827491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs