wifi troubleshooting

[JD]

On 03/20/2011 08:29 PM, Adam Tong wrote:
> Hi,
>
> My fedora 12 detects my wifi card. But i'm unable to activate the device. When I try to do that I have the following error:
> Error for wireless request "Set Mode" (8B06) :
>      SET failed on device wlan0 ; Invalid argument.
>
> Thank you
>
>
>
How about some details!
How were you trying to bring up the wireless card?
Were you doing that as root or unprivileged user?
Did you specifically issue a command like
iwconfig wlan0 mode managed
??