I read a bit about the current network interface management system and compared my setup with another Lucid install where networking works fine. Ashutosh, you're correct: my /etc/network/interfaces should not contain a line about eth0, Network Manager should pick up the hardware and activate it automatically. So why doesn't it? And, if 'ifup' and /etc/network/interfaces is the old way of doing things, what is the correct way?
Here is the output of lshw, when the computer is started without 'eth0' in /etc/network/interfaces: $ sudo lshw -c network *-network DISABLED description: Ethernet interface product: NetLink BCM5789 Gigabit Ethernet PCI Express vendor: Broadcom Corporation physical id: 0 bus info: p...@0000:02:00.0 logical name: eth0 version: 11 serial: 00:30:1b:b9:70:1c capacity: 1GB/s width: 64 bits clock: 33MHz capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.102 duplex=half firmware=5789-v3.29a latency=0 link=yes multicast=yes port=twisted pair resources: irq:18 memory:dfef0000-dfefffff Why would it be disabled? After I explicitly activate eth0 with 'ifup', 'lshw network' does not show it as 'DISABLED' any more. What do I need to do to boot up enabled? -- Upgrade removes eth0 from /etc/network/interfaces https://bugs.launchpad.net/bugs/579941 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs