[rt2x00-users] Indirect register access failed

Antonio Quartulli ordex at ritirata.org
Fri Jul 2 03:24:46 AEST 2010


On lun, giu 21, 2010 at 11:51:05 +0200, Antonio Quartulli wrote:
> > > > > > > The classic time out error:
> > > > > > > 
> > > > > > > Jun 18 21:54:57 eagle3 kernel: [   96.206662] phy0: device no longeridle - scanning
> > > > > > > Jun 18 21:54:58 eagle3 kernel: [   97.161141] wlan0: direct probe to 00:22:3f:03:81:dd (try 1)
> > > > > > > Jun 18 21:54:58 eagle3 kernel: [   97.361146] wlan0: direct probe to 00:22:3f:03:81:dd (try 2)
> > > > > > > Jun 18 21:54:58 eagle3 kernel: [   97.561100] wlan0: direct probe to 00:22:3f:03:81:dd (try 3)
> > > > > > > Jun 18 21:54:59 eagle3 kernel: [   97.761324] wlan0: direct probe to 00:22:3f:03:81:dd timed out
> > > > > > > Jun 18 21:54:59 eagle3 kernel: [   97.766249] phy0: device now idle
> > > > 
> > > > First possibility: the probe requests are not sent out at all
> > > > Second possibility: the probe requests are sent out but not received by the AP
> > > > 
> > > > One way to find that out would be to sniff the wireless traffic with a second
> > > > wireless card and check if the rt2800 card sends out probe requests and if
> > > > the AP answers them. Do you think you can do that?
> > > 
Hi all!
Sorry for writing only once aweek but in this period I'm a bit in
trouble with the university exams :P

About the card, I did some other tests (with the actual version of
wireless-testing) and as result I got that: the first time i was not
able to associate to the AP and i reported the same timeout as before.
Then i turned on wireshark and magically the device has associated, but
in wireshark i saw A LOT of retransmission by the AP!
I tried to use some application, like dhcp for first and then a simple
ping and I got that every packet (dhcp offer, echo reply) is sent many
many time..

Here you can find a log of the association scenario:
http://www.ritirata.org/ordex/association.cap

Regards,


-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara




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