[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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