Here's a mystery - a wireless card works with OpenSuse 11.0; with OpenSuse 
11.2, it no longer works.  Reverting to 11.0, and it works again.  I don't 
know enough about the details of wireless to know how to fix the problem, 
assuming it can be fixed.

The hardware:
------------
Router:
Linksys WRT54G, firmware v8.00.2

Wireless card:
Linksys WUSB11 V2.6 802.11b


The WORKING setup:
-----------------
OpenSUSE 11.0

driver software:
at76_usb
(identifed in log messages as 'Atmel at76x USB Wireless LAN Driver 0.17')

interfaces managed by NetworkManager and wpa_supplicant

At boot, interface comes up and works:

  Feb  2 14:44:57 boxn ifup-wireless:     wlan0     warning: using NO encryption
  Feb  2 14:44:57 boxn ifup-wireless: command 'iwconfig wlan0 nick boxn' 
returned
  Feb  2 14:44:57 boxn ifup-wireless:  Error for wireless request "Set 
Nickname" (8B1C) :
  Feb  2 14:44:57 boxn ifup-wireless:     SET failed on device wlan0 ; 
Operation not supported.
  Feb  2 14:44:57 boxn ifup:     wlan0
  Feb  2 14:44:57 boxn ifup: IP address: 192.168.1.6/24
  Feb  2 14:44:57 boxn ifup:

I get the warning about not being able to set the card nickname via 
iwconfig, but the connection is fine.


The BROKEN setup:
----------------
OS:
SuSE 11.2 release

driver software:
at76c50x-usb
(identifed in log messages as 'Atmel at76x USB Wireless LAN Driver 0.17')
(yes, the same as before)

interfaces managed by NetworkManager and wpa_supplicant

At boot, the wireless card 'sees' the access point, but is never able to 
connect to it (MAC addresses anonymized):

  Mar  6 15:07:22 boxn ifup:     wlan0     name: WUSB11 V2.6 802.11b Adapter
  Mar  6 15:07:22 boxn ifup-wireless:     wlan0     warning: using NO encryption
  Mar  6 15:07:23 boxn kernel: [ 2821.100811] ADDRCONF(NETDEV_UP): wlan0: link 
is not ready
  Mar  6 15:07:23 boxn kernel: [ 2821.108859] wlan0: direct probe to AP 
00:00:00:00:00:00 try 1
  Mar  6 15:07:23 boxn kernel: [ 2821.108924] wlan0: direct probe to AP 
00:01:02:03:04:05 try 1
  Mar  6 15:07:23 boxn ifup:     wlan0
  Mar  6 15:07:23 boxn ifup: IP address: 192.168.1.3/24
  Mar  6 15:07:23 boxn ifup:
  Mar  6 15:07:23 boxn kernel: [ 2821.308123] wlan0: direct probe to AP 
00:01:02:03:04:05 try 2
  Mar  6 15:07:23 boxn kernel: [ 2821.508091] wlan0: direct probe to AP 
00:01:02:03:04:05 try 3
  Mar  6 15:07:23 boxn kernel: [ 2821.708032] wlan0: direct probe to AP 
00:01:02:03:04:05 timed out

at this point, if I run iwconfig, the 'Access Point:' comes back as 'Not 
Associated'.

If I tried to manually run 'iwconfig wlan0 ap 00:01:02:03:04:05', 
/var/log/messages showed:
  Mar  6 15:20:25 boxn ifup:     wlan0     name: WUSB11 V2.6 802.11b Adapter
  Mar  6 15:20:25 boxn avahi-daemon[7757]: Server startup complete. Host name 
is boxn.local. Local service cookie is 1939683509.
  Mar  6 15:20:25 boxn ifup-wireless:     wlan0     warning: using NO encryption
  Mar  6 15:20:25 boxn ifup:     wlan0
  Mar  6 15:20:25 boxn ifup: IP address: 192.168.1.3/24
  Mar  6 15:20:25 boxn ifup:
  Mar  6 15:20:25 boxn kernel: [ 3603.741386] wlan0: authenticate with AP 
00:01:02:03:04:05
  Mar  6 15:20:26 boxn kernel: [ 3603.940027] wlan0: authenticate with AP 
00:01:02:03:04:05
  Mar  6 15:20:26 boxn kernel: [ 3604.140066] wlan0: authenticate with AP 
00:01:02:03:04:05
  Mar  6 15:20:26 boxn kernel: [ 3604.340076] wlan0: authentication with AP 
00:01:02:03:04:05 timed out

...and running 'iwconfig' still shows the access point as 'Not 
Associated'.

In both cases, encryption is turned off just to take that complication out 
of the picture.

'iwlist wlan0 scanning' finds the access point, no problem, and none of 
the other machines in the house have any trouble connecting.  It's just 
this machine, when 11.2 is installed.

Any thoughts as to how I would further debug this problem? (I'm not sure I 
will, at least not soon - the box in question is my wife's, and she's just 
happy to have a working OpenSuse 11.0 installed.)

--
David Fleck
[email protected]

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