Ubuntu 9.04 Network problem (wired)

[tbear2]

Hello to All!
I am new to Ubuntu.
I have installed Ubuntu 9.04 in a dual boot with Windows 2000 Pro on an old machine with a K7S5A MB with onboard SIS 900 PCI fast internet adapter, 1.5 Athlon XP, 1Gig RAM.
Ubuntu 9.04 (or maybe Network Manager) doesn’t locate the network / router (Linksys WRT54G).
I have looked around the net for solutions, but not much luck.

More info:
“ifconfig”
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:240 (240.0 B) TX bytes:240 (240.0 B)

“ifup”: failed to open statefile /var/run/network/ifstate: Permission denied

"sudo dhclient eth0"
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

SIOCSIFFLAGS: Cannot assign requested address
SIOCSIFFLAGS: Cannot assign requested address
Listening on LPF/eth0/00:00:00:00:00:00
Sending on LPF/eth0/00:00:00:00:00:00
Sending on Socket/fallback
receive_packet failed on eth0: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
send_packet: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
send_packet: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
send_packet: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
send_packet: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
send_packet: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
send_packet: Network is down
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
90

"sudo gedit /etc/network/interfaces"

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

Any help will be appreciated.
Thanks!
tb2

[Iowan]

Check sudo lshw -C network to see if your interface is recognized, has driver, etc.

[tbear2]

Thanks!
Here's the result...
$ sudo lshw -c network
*-network DISABLED
description: Ethernet interface
product: SiS900 PCI Fast Ethernet
vendor: Silicon Integrated Systems [SiS]
physical id: 3
bus info: pci@0000:00:03.0
logical name: eth0
version: 90
size: 100MB/s
capacity: 100MB/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=sis900 driverversion=v1.08.10 Apr. 2 2006 duplex=full latency=128 link=yes maxlatency=11 mingnt=52 module=sis900 multicast=yes port=MII speed=100MB/s
*-network DISABLED
description: Ethernet interface
physical id: 1
logical name: pan0
serial: fa:11:51:ad:01:d7
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes


What next?

[Iowan]

The "send_packet: Network is down" seems a little ominous - does it work when booted into Windows? This fixed my wired connection problems.

[tbear2]

Hi Iowan,
Yes it works fine in Windows 2000 Pro (how I am connecting at the moment.)
It also works fine on Knoppix 3.7 but shows a similar problem with a Knoppix V6 CD.

I wonder if the Network Manager is looking for a wireless network instead of a wired network?

Please, any help will be appreciated.

tb2

[tbear2]

Hi All,
I got to thinking about Knoppix 3.7 working and decided to do an “ifconfig” in Knoppix 3.7. It has a whole section on eht0 that is missing when I do it in Ubuntu 9.04:

knoppix@ttyp1[knoppix]$ ifconfig

eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:00

inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:3 errors:0 dropped:0 overruns:0 frame:0

TX packets:3 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:1026 (1.0 KiB) TX bytes:1274 (1.2 KiB)

Interrupt:22 Base address:0xd400



lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:8 errors:0 dropped:0 overruns:0 frame:0

TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:400 (400.0 b) TX bytes:400 (400.0 b)

Thanks for trying to help.
At this point I am totally lost.
tb2

[tbear2]

OK!
So I decided to see what happened if I booted into Ubuntu with the network cable unplugged.

Results from ifcongfig and sudo dhclient eth0 are the same as when the cable is plugged in, so I am guessing the problem is Network Manager.

Suggestions???

Any help would be appreciated...

[Iowan]

     auto lo
  iface lo inet loopback

  auto eth0
  iface eth0 inet dhcp

With eth0 defined in /etc/network/interfaces, Network Manager usually won't touch it. You can try commenting out the two eth0 lines, save and reboot/restart.

[tbear2]

I'll give that a try...

[tbear2]

OK.
I commented out the two eth0 lines.
Then I did a sudo /etc/init.d/networking restart

No change.
Tried a reboot to Ubuntu.
No change.