[maemo-developers] wifi of 770 goes blind

[From: Kalle Valo]

"ext Neil MacLeod" <gmane at nmacleod.com> writes:

> Kalle Valo wrote:
>> "ext Long" <gzmask at gmail.com> writes:
>> 
>>> my 770 wifi goes blind all in a sudden, I use a Dlink D614 without
>>> any encry. reflash to OS from 2007 hack to 2006 betas and final,
>>> the wifi remains blind all the time. tried to power off and
>>> detached the battery for a day, still blind.
>>  What do you mean with blind? Please describe the symptoms in more
>> detail. I couldn't understand from your description what's
>> happening.
>> 
>> Also, if possible, post the output of dmesg when this happens.
>
> There is additional background detail in a thread[1] that appeared on
> ITT

Ah, thanks. These links helped a bit. 

> in it I asked the OP to post in the developers mailing list as I had
> a hunch you might be the best person to assist! :)

Good advice. I don't follow any forums (even though way seem to quite
active!) because I don't have the time. Gotta do some real work too,
you know ;)

Please post any WLAN problems to maemo-users list and preferably CC me
(so that I don't miss it). I'll try to help as much as I can.

> It seems as though the 770 WiFi worked for a short while (2 hours) but
> has since failed to work at all - the 770 doesn't detect any networks
> despite reflashing with previous, current and hacker edition 770
> firmwares.

Hmm, symptoms sound like WLAN firmware is crashing. I would like to
see dmesg output. Does it contain "firmware crashed?" messages? Also
the message should be in syslog, if syslogd is installed. 

BTW, installing syslogd was a good advice.

Also, I would like to hear if this happens only in one specific
location. If he could test it elsewhere where there is less WLAN
traffic and APs. It might be related to the radio environment.

> Command line tools appear to suggest the WiFi interface is a little
> confused[2].

That's a feature. The interface must be up when scanning. So do a
'ifconfig wlan0 up' before running 'iwlist wlan0 scan'. 

But as you noted, iwlist scan is buggy. I'll fix it.

-- 
Kalle Valo