Bug seems to have been fixed in linux-backports-modules-
wireless-2.6.32-24-generic per #22 and #25. Closing
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/580753
Title:
ath9k module causing MIC challenge failures
Status in linux package in Ubuntu:
Fix Released
Bug description:
With an access point configured for WPA (TKIP), boot/associate six
ASUS eeePC 1005HA running either UNR 9.10 or UNE 10.04 simultaneously
(within a 2-3 second window) and one of them will cause a MIC
challenge failure, where, by protocol, everyone associated to the
access point will be disconnected for approximately 60 seconds.
While troubleshooting, determined the Xandros 1.8 image that ships on
the ASUS eeePC 1005HA uses a different driver altogether.
Simultaneously associate six of those while a UNR 9.10 or UNE 10.04
client is associated and the UNR/UNE client will cause a MIC challenge
failure, I suspect from having such a tight cycle of group rekeying,
based on the logs:
May 13 13:05:44 asd-laptop wpa_supplicant[732]: WPA: Group rekeying completed
with 00:1b:63:2b:46:75 [GTK=TKIP]
May 13 13:05:44 asd-laptop NetworkManager: <info> (wlan0): supplicant
connection state: completed -> group handshake
May 13 13:05:44 asd-laptop NetworkManager: <info> (wlan0): supplicant
connection state: group handshake -> completed
May 13 13:05:46 asd-laptop wpa_supplicant[732]: WPA: Group rekeying completed
with 00:1b:63:2b:46:75 [GTK=TKIP]
May 13 13:05:46 asd-laptop NetworkManager: <info> (wlan0): supplicant
connection state: completed -> group handshake
May 13 13:05:46 asd-laptop NetworkManager: <info> (wlan0): supplicant
connection state: group handshake -> completed
May 13 13:05:46 asd-laptop wpa_supplicant[732]: Michael MIC failure detected
Retested by reassociating the six Xandros clients without the UNR/UNE
client and no MIC failure occurs.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-21-generic 2.6.32-21.32
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: asd 1577 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7db8000 irq 22'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,104383ce,00100004'
Controls : 12
Simple ctrls : 7
Date: Fri May 14 14:40:36 2010
HibernationDevice: RESUME=UUID=64a6054c-eac5-4a34-bf57-03c85e705e6c
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386
(20100429.4)
MachineType: ASUSTeK Computer INC. 1005HA
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic
root=UUID=725ef15d-dd13-4d7f-b968-1b58bf967cb9 ro quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
dmi.bios.date: 08/26/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0801
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1005HA
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0801:bd08/26/2009:svnASUSTeKComputerINC.:pn1005HA:pvrx.x:rvnASUSTeKComputerINC.:rn1005HA:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1005HA
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
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