wifi stopped working, network manager glitch?

[ANDY]

DELL LATITUDE D600
BROADCOM BCM4306 802.11b/g
UBUNTU 9.10 +proposed


My wifi has been working months and months, but just stopped.

* I think I unchecked Enable Wireless from the Gnome Panel Network Manager
drop-down.  [it is a known problem up to Ubuntu 9.10 that once the Enable
Wireless is disabled either manually or by hibernate/sleep system modes,
that it can not be re-enabled during the same session until the system has
been restarted]

* Restarted the system, it started asking for my wifi passphrase (which is
still stored) and eventually it didn't see any local APs at all (of which
there are many).  The pull down says the BROADCOM is Disconnected (not
disabled).

* A borrowed USB wifi stick (RALINK 802.11 BG WLAN) which worked and used
the stored AP passphrase.

* Checked the Hardware Drivers which showed BROADCOM B43 WIRELESS DRIVER as
Active.  Removed/reinstalled it again as Active.

* The Power Management field from iwconfig says off, and maybe should say
'managed'.  I tried 'iwconfig wlan0 up', but that is an unrecognized
command/feature.

* I noticed when I used the borrowed USB wifi stick, the Network Manager
does not ask for my admin password as it did for the built-in wifi.  I just
used the stored AP passphrase and connects.


andy at TOBY:~$ dmesg | egrep 'b43|wlan0'
[    1.846981] b43-pci-bridge 0000:02:03.0: PCI INT A -> Link[LNKB] -> GSI 5
(level, low) -> IRQ 5
[   26.904262] b43-phy0: Broadcom 4306 WLAN found (core revision 5)
[   28.276150] b43 ssb0:0: firmware: requesting b43/ucode5.fw
[   28.280299] b43 ssb0:0: firmware: requesting b43/pcm5.fw
[   28.287597] b43 ssb0:0: firmware: requesting b43/b0g0initvals5.fw
[   28.295592] b43 ssb0:0: firmware: requesting b43/b0g0bsinitvals5.fw
[   28.424237] b43-phy0: Loading firmware version 410.2160 (2007-05-26
15:32:10)
[   28.500714] Registered led device: b43-phy0::tx
[   28.500740] Registered led device: b43-phy0::rx
[   28.500766] Registered led device: b43-phy0::radio
[   28.501296] ADDRCONF(NETDEV_UP): wlan0: link is not ready
andy at TOBY:~$


andy at TOBY:~$ iwconfig
[snip]
wmaster0  no wireless extensions.
wlan0     IEEE 802.11bg  ESSID:""
          Mode:Managed  Frequency:2.412 GHz  Access Point: Not-Associated
          Tx-Power=20 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
andy at TOBY:~$




ANDY - Salt Lake, UT US
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