Hello,

I'm running Kubuntu 6.06 on my laptop and have it set up to connect the the Internet at home through my wired router, and at work through our wireless hotspot with an ESSID and WEP key. I also want access to the Internet when I'm travelling on the train to and from London as I do quite often. I did once get this to work but no longer seem to be able to. I have tried connecting on several journeys lately and always get a connection failed when using wlassistant.

This is what I get when I do ifdown wlan0 and then ifup wlan0.

Password:
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

Listening on LPF/wlan0/00:90:96:79:7e:ec
Sending on LPF/wlan0/00:90:96:79:7e:ec
Sending on Socket/fallback
DHCPRELEASE on wlan0 to 172.31.100.1 port 67
donald@laptop:~$ sudo ifup wlan0
Error for wireless request "Set Encode" (8B2A) :
SET failed on device wlan0 ; Invalid argument.
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

Listening on LPF/wlan0/00:90:96:79:7e:ec
Sending on LPF/wlan0/00:90:96:79:7e:ec
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
donald@laptop:~$

Can anyone tell me what is going wrong, and what the message <Error for wireless request "Set Encode" (8B2A) : SET failed on device wlan0 ; Invalid argument> means?

Donald

ps My understanding of how wireless works is fairly basic I'm afraid.

Looking through the net, it's either one of these problems:
Your computer has been on for waaay too long, the drivers aren't too good and the card isn't responding right.
You have a problem with the cryptographic functions of your kernel.
Your firmware needs an update.
Your drivers are compile against the sources of an older kernel (any recent kernel upgrades, by any chance?)

"Error for wireless request "Set Encode" (8B2A)" is an error with WEP and/or crypto altogether.

Try connecting manually, using ifconfig and iwconfig if you know how to do that.