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good morning all.
Odd one for you...
I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows 2008 Server, but i moved it to Ubuntu.
Anyway, the machine will not stay on the network for any amount of time, without falling off... I have changed network cards, cables, ports on the switch, etc, and nothing seems to work. I have a Windows 2003 box giving out DHCP addresses, and for a while, i actually tured that off and setup a second Ubuntu box to give IPs... it made no difference. The box gets an IP, and can ping outside for a bit (2 min or so) and then just looses connectivity... ifconfig shows it with an IP (i have tried both Static and DHCP config) and nothing seems to work...
Restarting the network stack (/etc/init.d/networking restart) some times gets a connection working for a few min, but then it falls over again....
Has anyone seen this before? i have tried reinstalling, and it made no difference...
Thanks.
[Update] as requested, here is the output of lshw -C hardware:
*-network:0 DISABLED
description: Ethernet interface
product: 82546EB Gigabit Ethernet Controller (Copper)
vendor: Intel Corporation
physical id: 7
bus info: pci@0000:02:07.0
logical name: eth3
version: 01
serial: 00:0e:0c:6d:8c:9a
capacity: 1Gbit/s
width: 64 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-k8-NAPI firmware=N/A latency=64 link=no mingnt=255 multicast=yes port=twisted pair
resources: irq:18 memory:ff5a0000-ff5bffff ioport:b800(size=64)
*-network:1
description: Ethernet interface
product: 82546EB Gigabit Ethernet Controller (Copper)
vendor: Intel Corporation
physical id: 7.1
bus info: pci@0000:02:07.1
logical name: eth2
version: 01
serial: 00:0e:0c:6d:8c:9b
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 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-k8-NAPI duplex=full firmware=N/A ip=192.168.0.111 latency=64 link=yes mingnt=255 multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:17 memory:ff5c0000-ff5dffff ioport:bc00(size=64)
Just to note, the main onboard network card is not showing up for some reason. I have an Intel Dual GigE PCI card installed. Eth2 is the "Working" interface, an ETH3 is not connected to anything.... Also, this is probably the first time since i installed the machine that the connection is staying up... Do computers regularly fix themselves?
I love network problems :) whats the output of sudo lshw -C network ? – squareborg – 2011-07-11T12:58:49.673