Re: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

Re: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Ben Hutchings]

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[The previous message is logged at <http://bugs.debian.org/641424>.]

On Tue, 2011-09-13 at 12:15 +0100, Miguel Martinez wrote:
> Package: linux-2.6
> Version: 3.0.0-3
> Severity: normal
> 
> Dear Maintainer,
> 
> My laptop (T400, Intel WiFi Link 5300) is connected at university using
> Eduroam, an WPA2-enterprise network. After configuring the interface 
> (either KDE or Gnome2 versions of network-manager), a connection will 
> be established. After a while, however, the connection will be dropped
> (local reason 3), and will not be reestablished (Reason: 23) after an
> indefinite number of attempts. Apparently, nm is not able to renew the
> IP. 
> 
> >From the dmesg output, it seems the wifi card is struggling to decide
> which of two AP it should connect to. Extract from dmesg right after the
> first disconnect:

I think that's a symptom, not a cause of the failure.

> [  817.555025] wlan0: deauthenticating from 00:16:9d:7c:97:02 by local choice (reason=3)
> [  817.565665] cfg80211: Calling CRDA to update world regulatory domain
> [  817.575513] wlan0: authenticate with 00:16:c7:71:a1:42 (try 1)
> [  817.578148] wlan0: authenticated
> [  817.579185] cfg80211: World regulatory domain updated:
> [  817.579192] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
> [  817.579200] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  817.579209] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [  817.579216] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [  817.579224] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  817.579232] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  817.580656] wlan0: associate with 00:16:c7:71:a1:42 (try 1)
> [  817.583046] wlan0: RX AssocResp from 00:16:c7:71:a1:42 (capab=0x431 status=0 aid=78)
> [  817.583049] wlan0: associated
> [  818.626062] wlan0: deauthenticated from 00:16:c7:71:a1:42 (Reason: 23)
> [  818.634705] cfg80211: Calling CRDA to update world regulatory domain
> [  818.644952] cfg80211: World regulatory domain updated:
> [  818.644960] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
> [  818.644969] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  818.644977] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [  818.644985] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [  818.644993] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  818.645000] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [  821.971502] wlan0: authenticate with 00:16:9d:7c:97:02 (try 1)
> [  821.974151] wlan0: authenticated
> [  821.977578] wlan0: associate with 00:16:9d:7c:97:02 (try 1)
> [  821.979659] wlan0: RX AssocResp from 00:16:9d:7c:97:02 (capab=0x431 status=0 aid=205)
> [  821.979668] wlan0: associated
> [  823.018591] wlan0: deauthenticated from 00:16:9d:7c:97:02 (Reason: 23)
> 
> Disabling and reenabling the network helps to reconnect to Eduroam, but
> will not last for long, repeating the pattern described above.
> 
> I first thought it was an issue with knetwork-manager in Wheezy's KDE
> [1], so I upgraded to testing.

'wheezy' is the testing suite at the moment.  Did you start from an
earlier installation of testing, or from stable ('squeeze')?

> The issue remains in all kernels I've
> tried. I've also tried installing Gnome 2.32 from testing and using
> nm-applet.
> 
> Following suggestions in some bug reports [2], I've tried disabling 11n
> and/or disabling power management (seems to be off in any case), but it
> doesn't help. This is all more puzzling, since my Ubuntu 10.10 partition
> has no such problems with Eduroam. I should note that Ubuntu 10.10 does
> disable 11n, but it's reenabled for 11.04 and later. I will try OpenSUSE
> 11.4 from a live USB to see if the problem also exists there.
> 
> Finally, it should be mentioned that WPA2 at home works without issues,
> and with 11n enabled (where I'm writing this from).
> 
> Regards,
> 
> Miguel
> 
> [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=594452
> [2]
> https://bugs.launchpad.net/ubuntu/maverick/+source/linux-firmware/+bug/630748
> 
> 
> -- Package-specific info:
> ** Version:
> Linux version 3.0.0-1-amd64 (Debian 3.0.0-3) (ben@decadent.org.uk) (gcc version 4.5.3 (Debian 4.5.3-8) ) #1 SMP Sat Aug 27 16:21:11 UTC 2011
> 
> ** Command line:
> BOOT_IMAGE=/boot/vmlinuz-3.0.0-1-amd64 root=UUID=26d17817-1add-4b72-8386-1039a90eb83a ro quiet acpi_sleep=sci_force_enable intel_iommu=on pcie_aspm=force
[...]

I don't think it's likely to be relevant, but could you test without the
'pcie_aspm=force' option?

Ben.

-- 
Ben Hutchings
To err is human; to really foul things up requires a computer.

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RE: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Venkataraman, Meenakshi]

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RE: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[wwguy]

On Tue, 2011-09-13 at 16:41 -0700, Ben Hutchings wrote:
> On Tue, 2011-09-13 at 16:33 -0700, Venkataraman, Meenakshi wrote:
> > Hi Miguel,
> > 
> > It looks like the AP you're connected to at the University is a Cisco
> > AP. I'm not sure what reason code 23 is, will need to research it
> > some.
> 
> 	WLAN_REASON_IEEE8021X_FAILED = 23,
> 
> > In the meantime, can you do the following so we can see what's going
> > on in the iwlwifi driver:
> > 
> > 1) Enable debugging for the iwlwifi driver like so: 
> > 	modprobe iwlagn debug=0x47fff 
> > You'll need to enable debugging for iwlwifi while building the kernel.
> > 
> > 2) A wireless sniffer log would also be useful (not sure you're in a
> > position to gather this log).
> > 
> > Please send me (only) the log. We can take this to bugzilla as well.
> [...]
> 
> If you mean bugzilla.kernel.org, that is currently down along with much
> of the kernel.org infrastructure.
> 

please use http://bugzilla.intellinuxwireless.org

Thanks
Wey
> 

RE: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Ben Hutchings]

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On Tue, 2011-09-13 at 16:33 -0700, Venkataraman, Meenakshi wrote:
> Hi Miguel,
> 
> It looks like the AP you're connected to at the University is a Cisco
> AP. I'm not sure what reason code 23 is, will need to research it
> some.

	WLAN_REASON_IEEE8021X_FAILED = 23,

> In the meantime, can you do the following so we can see what's going
> on in the iwlwifi driver:
> 
> 1) Enable debugging for the iwlwifi driver like so: 
> 	modprobe iwlagn debug=0x47fff 
> You'll need to enable debugging for iwlwifi while building the kernel.
> 
> 2) A wireless sniffer log would also be useful (not sure you're in a
> position to gather this log).
> 
> Please send me (only) the log. We can take this to bugzilla as well.
[...]

If you mean bugzilla.kernel.org, that is currently down along with much
of the kernel.org infrastructure.

Ben.

-- 
Ben Hutchings
All extremists should be taken out and shot.

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RE: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Venkataraman, Meenakshi]

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Re: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Miguel Martínez]

OK, thanks for the tip. Debian kernel 3.0.0-1 doesn't have these options 
enabled, so I'll get to know how good the debian kernel build tools are.

$ grep CONFIG_IWLWIFI /boot/config-3.0.0-1-amd64 | grep -i debug
# CONFIG_IWLWIFI_DEBUG is not set
# CONFIG_IWLWIFI_LEGACY_DEBUG is not set

$ grep CONFIG_MAC80211 /boot/config-3.0.0-1-amd64 
CONFIG_MAC80211=m
CONFIG_MAC80211_HAS_RC=y
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_MINSTREL_HT=y
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
CONFIG_MAC80211_HWSIM=m

Also, Ubuntu 10.10 has kernel 2.6.35, with some extra sauce and backports. 
I've seen some mentions of 2.6.38 in the changelogs. The iwlagn entries 
mention only some rfkill changes, though.

Regards,

Miguel

Re: Bug#641424: iwlagn: fails to reconnect to WPA2-enterprise (Reason: 23)

[Ben Hutchings]

On Wed, Sep 14, 2011 at 11:53:34PM +0100, Miguel Martínez wrote:
> OK, thanks for the tip. Debian kernel 3.0.0-1 doesn't have these options 
> enabled, so I'll get to know how good the debian kernel build tools are.
[...]
 
The kernel handbook should help you with this:

<http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official>

Ben.

-- 
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus