Xanko
August 9th, 2011, 09:07 PM
I just upgraded my Ubuntu Server from 10.04 to 11.04. I am having issues with the ethernet connection upon boot. The connection will blink slowly and not stay connected to the network. If I then unplug the ethernet from the switch and then replug it in, eth0 will get a steady connection, at which point I have to run the following command to get everything working.
sudo dhclient eth0
After running the command I have no issues with the ethernet connection.
lshw -C network
*-network:0
description: Ethernet interface
product: 82557/8/9/0/1 Ethernet Pro 100
vendor: Intel Corporation
physical id: 4
bus info: pci@0000:04:04.0
logical name: eth1
version: 0d
serial: 00:0e:0c:4d:21:9f
size: 10Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.24-k2-NAPI duplex=half firmware=N/A latency=66 link=no maxlatency=56 mingnt=8 multicast=yes port=MII speed=10Mbit/s
resources: irq:20 memory:fc241000-fc241fff ioport:7400(size=64) memory:fc200000-fc21ffff
*-network:1
description: Ethernet interface
product: 82540EM Gigabit Ethernet Controller
vendor: Intel Corporation
physical id: 5
bus info: pci@0000:04:05.0
logical name: eth0
version: 02
serial: 00:0e:0c:4d:1f:3a
size: 100Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm pcix msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k5-NAPI duplex=full firmware=N/A ip=10.1.1.100 latency=52 link=yes mingnt=255 multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:23 memory:fc220000-fc23ffff ioport:7440(size=64)
dmesg | grep "eth0"
[ 1.658510] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
[ 62.153856] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 217.088375] e1000: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
[ 217.088735] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 227.292013] eth0: no IPv6 routers present
/etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet dhcp
Not sure if anything else is needed, please assist me in troubleshooting this issue and determining if it is an actual bug.
sudo dhclient eth0
After running the command I have no issues with the ethernet connection.
lshw -C network
*-network:0
description: Ethernet interface
product: 82557/8/9/0/1 Ethernet Pro 100
vendor: Intel Corporation
physical id: 4
bus info: pci@0000:04:04.0
logical name: eth1
version: 0d
serial: 00:0e:0c:4d:21:9f
size: 10Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.24-k2-NAPI duplex=half firmware=N/A latency=66 link=no maxlatency=56 mingnt=8 multicast=yes port=MII speed=10Mbit/s
resources: irq:20 memory:fc241000-fc241fff ioport:7400(size=64) memory:fc200000-fc21ffff
*-network:1
description: Ethernet interface
product: 82540EM Gigabit Ethernet Controller
vendor: Intel Corporation
physical id: 5
bus info: pci@0000:04:05.0
logical name: eth0
version: 02
serial: 00:0e:0c:4d:1f:3a
size: 100Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm pcix msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k5-NAPI duplex=full firmware=N/A ip=10.1.1.100 latency=52 link=yes mingnt=255 multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:23 memory:fc220000-fc23ffff ioport:7440(size=64)
dmesg | grep "eth0"
[ 1.658510] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
[ 62.153856] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 217.088375] e1000: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
[ 217.088735] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 227.292013] eth0: no IPv6 routers present
/etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet dhcp
Not sure if anything else is needed, please assist me in troubleshooting this issue and determining if it is an actual bug.