HP 620: ethernet problem

Question

linux

Notebook HP Compaq 620 (XN631ES) . Installed Kubuntu 10.10, a problem appears - you cannot configure the Internet via ethernet with a static IP. L1 - checked.

The situation is this - there is a router, 192.168.1.1, we turn off the vitukha from the working desktop, stick it into the laptop port, manually configure the data (ip 192.168.1.1) - the network is not caught.

I tried to boot from the ubuntu 9.04 live disk - the same garbage.

Here are the logs.

Cable disconnected:

[email protected]:~$ ping 192.168.1.1
connect: Network is unreachable
[email protected]:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 1c:c1:de:a0:18:98  
          inet6 addr: fe80::1ec1:deff:fea0:1898/64 Scope:Link
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:101 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:23677 (23.6 KB)
          Interrupt:30 Base address:0xa000

lo Link encap:Local Loopback  
          inet addr:127.0.0.1Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:18 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1538 (1.5 KB) TX bytes:1538 (1.5 KB)

Turning on the cable:

[email protected]:~$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
From 192.168.1.5 icmp_seq=1 Destination Host Unreachable
From 192.168.1.5 icmp_seq=2 Destination Host Unreachable
From 192.168.1.5 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.1.1 ping statistics ---
5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4024ms
,pipe 3
[email protected]:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 1c:c1:de:a0:18:98  
          <b>inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0</b>
          inet6 addr: fe80::1ec1:deff:fea0:1898/64 Scope:Link
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:<b>111</b> errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:25557 (25.5 KB)
          Interrupt:30 Base address:0xa000

lo Link encap:Local Loopback  
          inet addr:127.0.0.1Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:26 errors:0 dropped:0 overruns:0 frame:0
          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2344 (2.3 KB) TX bytes:2344 (2.3 KB)

We tried to configure both through KNetworkManager and through /etc/network/interfaces.

Note that if you plug the same cord into a desktop with kubunta, everything works there.

Answer 1

In addition to the static IP address, what other parameters are set if configured via /etc/network/interfaces?

Answer 2

1. Ping lo (127.0.0.1) - this will eliminate the problem with the TCP / IP stack
2. Ping the IP of the interface - If it does not ping - the interface has not risen or the IP has crookedly registered.
3. Try to find another PC, and connect the computers directly, ping - it will eliminate problems with the wire or router.
If all else fails, netstat -r
tcpdump the interface during the ping (better before you start so that the arp request is also caught)