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[Bug 974838] Re: Wireless Dropout - Tx aggregation enabled on ra (workaround: iwlwifi requires 11n_disable=1)

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: rCX <974838@xxxxxxxxxxxxxxxxxx>
Date: Sat, 12 Apr 2014 00:39:09 -0000
Reply-to: Bug 974838 <974838@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Had the same problem and saw many "Tx aggregation enabled on ra" errors in syslog.  
The suggested workaround ("options iwlwifi 11n_disable=1" in /etc/modprobe.d/iwlwifi.conf) seems to fix this.

OS: Ubuntu 12.04
Kernel: 3.2.0-60-generic
Computer: Lenovo Thinkpad Edge 14
Wireless Card: Intel Centrino Wireless-N 1000

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https://bugs.launchpad.net/bugs/974838

Title:
  Wireless Dropout - Tx aggregation enabled on ra (workaround: iwlwifi
  requires 11n_disable=1)

Status in “linux” package in Ubuntu:
  Incomplete
Status in “linux” package in Fedora:
  Unknown

Bug description:
  After repeated messages in syslog with "Wireless Dropout - Tx
  aggregation enabled on ra" the wireless connection drops but nm-applet
  shows the connection is maintained.

  
  [ 1993.150229] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2027.374298] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2038.349962] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2067.814290] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2165.598224] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2213.412664] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2236.470968] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 6
  [ 2270.489254] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2714.040308] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2753.314277] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2788.096691] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2934.442107] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0
  [ 2993.274320] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:24:a5:d7:9e:5e tid = 0

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