No wireless in Ubuntu :(

[Tom H]

On Fri, Oct 16, 2009 at 5:20 PM, Christopher Lemire
<christopher.lemire at gmail.com> wrote:

> chris at ubuntu:~$ ifconfig
> eth1      Link encap:Ethernet  HWaddr 00:c0:26:7d:4c:df
>          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
>          UP BROADCAST MULTICAST  MTU:1500  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>          Interrupt:21 Base address:0xce00
> wlan2     Link encap:Ethernet  HWaddr 00:01:f7:d8:f6:aa
>          inet addr:192.168.1.225  Bcast:192.168.1.255  Mask:255.255.255.0
>          inet6 addr: fe80::201:f7ff:fed8:f6aa/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:69 errors:5 dropped:132 overruns:0 frame:0
>          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:10409 (10.4 KB)  TX bytes:7300 (7.3 KB)

> chris at ubuntu:~$ route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
> 192.168.1.0     0.0.0.0         255.255.255.0   U     2      0        0 wlan2
> 169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth1
> 0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan2

> chris at ubuntu:~$ ping 192.168.1.1
> PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
> 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.058 ms
> 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.049 ms
> 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.037 ms
> 64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.037 ms

> chris at ubuntu:~$ ping google.com
> ping: unknown host google.com

> The routing table shows 0.0.0.0 as my gateway. That sounds like it
> could be the problem.

"0.0.0.0 192.168.1.1...UG..." means that 192.168.1.1 is your default
gateway, which is bad since it is also the IP address of eth1 (which
is strange; and it is doubly strange that it does not have an ipv6
address).

Since you can ping 192.168.1.1 when you are booted into Windows and
your are dual-booting, it looks like you have the same IP address for
your gateway and your wired NIC.

1. What is the output of
cat /etc/resolv.conf

2.a Run
ps -ef | grep dhc

2.b Run
cat <the_lease_file_denoted_by_the_"-lf"_flag_in_the_grep>
(it should be in /var/lib/dhcp3)

3. Please unplug your wired NIC then
ping google.com