I ran into what I believe to be the same problem, only with changing
my mode from managed to monitor.  The problem is that this command
will fail unless the interface is down.  So, what I did was to simply
do an 'ifconfig eth1 down' prior to changing the mode, and then reload
the b43 module afterwards because after being in monitor mode it
doesn't want to switch back to master.

for me and my bcm4306, the b43 driver automagically puts the card in
managed mode when the driver loads.

On Fri, Feb 29, 2008 at 5:30 AM, Ingo Kofler <[EMAIL PROTECTED]> wrote:
> Dear all,
>
>  I've installed the kernel 2.6.24 on my Ubuntu 7.10 box in order to make use 
> of the b43 driver. I am using the Linksys WMP54GS PCI Wifi card (BCM4318). 
> The compilation and the installation of the firmware worked fine and I was 
> also able to run the card in the STA mode. Association to a AP etc. worked 
> fine.
>
>  However, then I've tried to switch to AP ("Master") mode like this
>
>   iwconfig wlan0 mode Master
>
>  which resulted in the following error
>
>  Error for wireless request "Set Mode" (8B06) :
>     SET failed on device wlan0 ; Invalid argument.
>
>
>  According to http://linuxwireless.org/en/users/Drivers/b43 the Access Point 
> mode should be supported (although not well tested). Therefore, I have 
> several ideas why it does not work and hopefully one of you can show me the 
> right way:
>
>  1) I need another firmware for the AP mode
>  2) I must not use iwconfig but this new configuration tool for cfg80211
>  3) I need a newer driver than the one included in 2.6.24
>  4) I have to use this hostap deamon?
>  5) I must specify an option when loading the b43 module (although modinfo 
> b43 does not show my any matching options)
>  6) no more ideas ...
>
>  I hope that someone of you can help...
>
>  Best Regards,
>  Ingo
>  --
>  Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games!
>  http://games.entertainment.web.de/de/entertainment/games/free
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