Re: [tlug] WiFi roaming and open networks

[Dave M G <dave@example.com>]

Christian,

Thanks for replying.

Okay, so I went down to the same place where I encountered the Mac guy 
who was successfully getting some WiFi action, and fired up the laptop.

Then I went down the list of commands you suggested:

dave@example.com:~$ ping www.heise.de
ping: unknown host www.heise.de

This was unsurprising.

dave@example.com:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

eth1      IEEE 802.11g  ESSID:"V110-c3b851"
          Mode:Managed  Frequency:2.452 GHz  Access Point: 
00:80:87:F3:91:7F
          Bit Rate:54 Mb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=67/100  Signal level=-60 dBm  Noise level=-90 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:19

Hmm... I'm not sure what to make of this. The eth1 thingy seems to be 
talking to someone, but I don't quite get why there is an eth0 and eth1. 
Shouldn't I have just one wireless device?

dave@example.com:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0b:97:2b:a4:7e
          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:3 Base address:0x3000

eth1      Link encap:Ethernet  HWaddr 00:0e:35:ac:01:5b
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:282 errors:0 dropped:0 overruns:0 frame:0
          TX packets:42 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:3397 (3.3 KB)
          Interrupt:7 Base address:0x8000 Memory:e0200000-e0200fff

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:176 errors:0 dropped:0 overruns:0 frame:0
          TX packets:176 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11952 (11.6 KB)  TX bytes:11952 (11.6 KB)

Don't know what to make of any of that.

dave@example.com:~$ ip route show
dave@example.com:~$ cat /etc/resolv.conf

These last two commands returned nothing, but sometimes they did. 
Unfortunately, I rebooted for other reasons, and I didn't think that I 
wouldn't be able to get their output back. In any case, whatever output 
they provided briefly the first time I tried them, I was unable to get 
them again.

There's only one other thing I could add. Inside Ubuntu under 
System->Administration->Hardware Testing, there's a utility to test 
hardware. The network device test returned this error:

Testing your connection to the Internet:
ERROR:root:Could not find def gateway info in /proc
Traceback (most recent call last):
  File "/usr/share/hwtest/scripts/internet_test", line 132, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/share/hwtest/scripts/internet_test", line 118, in main
    host = route.get_default_gateway()
  File "/usr/share/hwtest/scripts/internet_test", line 81, in 
get_default_gateway
    t1 = self._get_default_gateway_from_bin_route()
  File "/usr/share/hwtest/scripts/internet_test", line 69, in 
_get_default_gateway_from_bin_route
    if def_gateway:
UnboundLocalError: local variable 'def_gateway' referenced before assignment
Are you connected to the Internet?

That's about it. Does any of this shed any light?

--
Dave M G
http://www.tlug.jp/wiki/User:Dave_M_G