Wireless: network detected, but no connection

[Frank Lorenz]

On Tue, 2009-11-10 at 13:08 -0800, NoOp wrote:

> > The bad news is that I'm not able to replicate the same procedure on
> > Ubuntu 9.10. By manually editing the network connection (on NM), if I
> > select "No Security", the connection attempt fails as described in my
> > original post. 
> > If I select anything else (WPA, WEP,...), the GUI does not allow to
> > leave a blank password field. 
> > And there is no "Enable Roaming Mode" option to select or deselect.
> > 
> > Any ideas now?  :-)
> 
> I set my router temporarily to no security & changed the essid to 'x'.

(...)

- UPDATE -

That's what I did today:

- removed wicd
- removed NetworkManager & gnome-NetworkManager
- restarted the machine. No connection (of course)

>From terminal I manually configured the wlan interface

- sudo iwconfig wlan0 essid "OpenNetwork"
- sudo iwconfig wlan0 channel... etc...

followed by

- sudo dhclient

The machine obtained an IP address from the DHCP and...

- ping my gateway and it answered immediately :-)
- opened Firefox and surfed the web :-)
- downloaded a large file, listened to web-radio, etc. :-)))

It looks like NetworkManager and/or wicd are messing something with the
wlan-stick. 

Is it possible that NetworkManager and wicd do not work with older
wlan-sticks?