Re: Thinkpad T20 wireless troubles - revisited

[Celejar <celejar@gmail.com>]

On Tue, 30 Oct 2007 23:10:48 +0100
Sjoerd Hiemstra <shiems146@kpnplanet.nl> wrote:

> Following the directions at [2], the entry for wifi0
> in /etc/network/interfaces now looks like this:
> 
>     iface wifi0 inet dhcp
>     wireless-essid <....>
>     wireless-key <....>
>     auto wifi0
>     allow-hotplug wifi0
> 
> If I do an 'iwlist wifi0 scan' then my AP is detected correctly (as
> well as two neighbouring APs - interesting).
> 
> There is only one remaining obstacle.
> The following messages appear if I do an 'ifup wifi0'.
> They also appear after '/etc/init.d/networking stop' and then
> '/etc/init.d/networking start'.
> And they also appear if I do a 'dhclient wifi0'.
> 
>     wifi0: unknown hardware address type 801
>     wifi0: unknown hardware address type 801
>     Listening on LPF/wifi0/
>     Sending on LPF/wifi0/
>     Sending on Socket/fallback
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 5
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 12
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 14
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 11
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 12
>     DHCPDISCOVER on wifi0 to 255.255.255.255 port 67 interval 7
>     No DHCPOFFERS received.
>     No working leases in persistent database - sleeping.
> 
> Something wrong with DHCP on the AP?  My main computer works well with
> it, through a wired ethernet connection.

This can also indicate that the card isn't properly associating with
the AP.  What does 'iwconfig wifi0' give?  If the problem is really
with the AP's DHCP configuration, then you should be able to get
network access with a static IP address, e.g. 'ifconfig wifi0
nnnnnnnn'.  In my experience, this sort of DHCP failure with a wireless
card and a presumed good AP always means that there's something wrong
with the wireless configuration.

Celejar
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