iwl4965 regression since 2.6.24

iwl4965 regression since 2.6.24

[Lukas Hejtmanek]

Hello,

as of 2.6.25 kernel, the intel driver iwl4965 has serious troubles to
associate with AP. I must many times set essid till the association is =
done.

Moreover, it seems that it is unable to associate with different AP (us=
ing the
same SSID). I must remove the module completly to be able to associate =
to the
different AP. I think it is big regression.

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RE: iwl4965 regression since 2.6.24

[Chatre, Reinette]

On , linux-wireless-owner@vger.kernel.org  wrote:

> Hello,
> 
> as of 2.6.25 kernel, the intel driver iwl4965 has serious troubles to
> associate with AP. I must many times set essid till the
> association is done.
> 
> Moreover, it seems that it is unable to associate with
> different AP (using the
> same SSID). I must remove the module completly to be able to
> associate to the different AP. I think it is big regression.
> 

Could you please send us some logs that can help us debug this problem?
Please load the driver with debugging (modprobe iwl4965 debug=0x43ffb)
to get detailed logs and add a detailed description about what you are
trying to do with the driver as the logs are created. Also, please
consider filing a bug at http://www.intellinuxwireless.org/bugzilla/
with these logs attached.

Thanks

Reinette

Re: iwl4965 regression since 2.6.24

[Lukas Hejtmanek]

On Wed, Apr 23, 2008 at 02:29:14PM -0700, Chatre, Reinette wrote:
> Could you please send us some logs that can help us debug this proble=
m?
> Please load the driver with debugging (modprobe iwl4965 debug=3D0x43f=
fb)
> to get detailed logs and add a detailed description about what you ar=
e
> trying to do with the driver as the logs are created. Also, please
> consider filing a bug at http://www.intellinuxwireless.org/bugzilla/
> with these logs attached.

done at:
http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=3D1659

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Re: iwl4965 regression since 2.6.24

[Tomas Winkler]

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Re: iwl4965 regression since 2.6.24

[Lukas Hejtmanek]

On Wed, Apr 23, 2008 at 12:16:34PM -0400, Chris Hallinan wrote:
> I tried associating manually using the AP address itself, to all the
> cells I could see, but could not get past the "Link Quality: 0" issue=
=2E
>=20
> Windows XP on this same laptop connected immediately and worked. :(

I found out that iwconfig wlan0 ap auto (which according to the man pag=
e
should reassociate with the strongest AP) does nothing at all.=20

It seems that once associated with AP, the mac or iwl4965 driver (do no=
t know
which one) is unable to associate with a different AP.

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Re: iwl4965 regression since 2.6.24

[Joel Becker]

On Wed, Apr 23, 2008 at 02:41:06PM +0200, Lukas Hejtmanek wrote:
> as of 2.6.25 kernel, the intel driver iwl4965 has serious troubles to
> associate with AP. I must many times set essid till the association is done.
> 
> Moreover, it seems that it is unable to associate with different AP (using the
> same SSID). I must remove the module completly to be able to associate to the
> different AP. I think it is big regression.

	I am experiencing the same problems on 2.6.24.  I have also
noticed that it cannot recover association after waking from sleep.  I
must set the essid before it will talk to the AP.  I always see this in
dmesg at the time:

  ADDRCONF(NETDEV_UP): wlan0: link is not ready

After I explicitly re-specify the ssid, I see this in dmesg:

  ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

	To clarify: when the interface comes up after boot or wake, it
associates but will not actually send data (Destination Host
Unreachable).  I must run "iwconfig wlan0 essid <ssid>".  After that, it
works.  When I move to a new network with a different access point, I
must unload and reload the module.
	Hopefully, I'll get a chance to run with debugging and send
along some logs.

Thinkpad x61s,
03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN Network Connection (rev 61)


Joel

-- 

"One of the symptoms of an approaching nervous breakdown is the
 belief that one's work is terribly important."
         - Bertrand Russell 

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127