iwlagn / wpa_supplicant issue

[Fabio Coatti]

2011/4/20 Johannes Berg <johannes at sipsolutions.net>:
> On Mon, 2011-04-18 at 21:52 +0200, Fabio Coatti wrote:
>> 2011/4/18 Jouni Malinen <j at w1.fi>:
>> > On Sun, Apr 17, 2011 at 10:20:58AM +0200, Fabio Coatti wrote:
>> >> Yes, I see that the interface is down, but no 'ifconfig wlan0 up' nor
>> >> 'ip link set wlan0 up' works.
>> >> the interface remains down.
>> >
>> > If those commands fail to bring the interface up, wpa_supplicant will
>> > not be able to do it either. What kind of error message do you get from
>> > either of those commands? This sounds like a rfkill issue, i.e., the
>> > system is likely configured to not allow WLAN to be enabled.
>>
>> No error messages in either case, only dmesg notification, the usual
>> ADDRCONF(NETDEV_UP): wlan0: link is not ready
>
> If you get that message, the interface _is_ up.

Uhm, this lets me wonder how ip and ifconfig commands shows the
interface "down" and wpa_supplicant is unable to see any wifi network,
and it's enough to issue a iwlist scan to make everything working
again...weird enough.




-- 
Fabio