Public bug reported:

Binary package hint: module-init-tools

This is a fresh bug referring to this bug here:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/630748
which has been marked as fix-released.

When 802.11n is used on a Laptop with an Intel 802.11n capable wireless
card, such as the Intel 5300 in my Lenovo Thinkpad X200s, and I do any
non-nominal level of network traffic, such as a file transfer of any
kind, the wireless driver will reset the device.

I experience exactly the same symptoms as noted on #630748 and the same
laptop and wireless card as noted by the original reporter of that bug.

If I disable 802.11n I can use my laptop normally.

cat /etc/modprobe.d/iwlagn.conf 
options iwlagn 11n_disable50=1 11n_disable=1

This is a log of what it looks like when the problem occurs.

Apr  9 09:52:18 pearl kernel: [  107.811100] iwlagn 0000:03:00.0: Aggregation 
not enabled for tid 0 because load = 0
Apr  9 09:52:22 pearl kernel: [  112.127615] iwlagn 0000:03:00.0: 
iwlagn_tx_agg_start on ra = 00:22:75:f2:b0:43 tid = 0
Apr  9 09:52:26 pearl kernel: [  115.805060] iwlagn 0000:03:00.0: low ack count 
detected, restart firmware
Apr  9 09:52:26 pearl kernel: [  115.805067] iwlagn 0000:03:00.0: On demand 
firmware reload
Apr  9 09:52:26 pearl kernel: [  115.836030] iwlagn 0000:03:00.0: Stopping AGG 
while state not ON or starting
Apr  9 09:52:26 pearl kernel: [  115.836035] iwlagn 0000:03:00.0: queue number 
out of range: 0, must be 10 to 19
Apr  9 09:52:26 pearl kernel: [  116.204037] iwlagn 0000:03:00.0: 
iwlagn_tx_agg_start on ra = 00:22:75:f2:b0:43 tid = 0
Apr  9 09:52:31 pearl kernel: [  121.027349] iwlagn 0000:03:00.0: low ack count 
detected, restart firmware
Apr  9 09:52:31 pearl kernel: [  121.027356] iwlagn 0000:03:00.0: On demand 
firmware reload
Apr  9 09:52:31 pearl kernel: [  121.058471] iwlagn 0000:03:00.0: Stopping AGG 
while state not ON or starting
Apr  9 09:52:31 pearl kernel: [  121.058477] iwlagn 0000:03:00.0: queue number 
out of range: 0, must be 10 to 19
Apr  9 09:52:32 pearl kernel: [  121.876040] iwlagn 0000:03:00.0: 
iwlagn_tx_agg_start on ra = 00:22:75:f2:b0:43 tid = 0
Apr  9 09:52:39 pearl kernel: [  129.116827] iwlagn 0000:03:00.0: low ack count 
detected, restart firmware
Apr  9 09:52:39 pearl kernel: [  129.116833] iwlagn 0000:03:00.0: On demand 
firmware reload
Apr  9 09:52:39 pearl kernel: [  129.155110] iwlagn 0000:03:00.0: Stopping AGG 
while state not ON or starting
Apr  9 09:52:39 pearl kernel: [  129.155117] iwlagn 0000:03:00.0: queue number 
out of range: 0, must be 10 to 19
Apr  9 09:52:41 pearl kernel: [  130.512066] iwlagn 0000:03:00.0: 
iwlagn_tx_agg_start on ra = 00:22:75:f2:b0:43 tid = 0
Apr  9 09:52:44 pearl kernel: [  134.052032] iwlagn 0000:03:00.0: 
iwlagn_tx_agg_start on ra = 00:22:75:f2:b0:43 tid = 0
Apr  9 09:52:51 pearl kernel: [  141.097408] iwlagn 0000:03:00.0: low ack count 
detected, restart firmware

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: module-init-tools 3.12-1ubuntu6
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
Date: Wed Apr 13 17:42:31 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/usr/bin/fish
SourcePackage: module-init-tools
UpgradeStatus: Upgraded to natty on 2011-04-04 (8 days ago)

** Affects: module-init-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 natty

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https://bugs.launchpad.net/bugs/759529

Title:
  iwlagn degrades quickly during normal wifi session

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