[Bug 655118] [NEW] WLAN (ath9k) very slow since linux 2.6.32-25

[Franz Hoffmann]

Public bug reported:

Package:
linux-image-2.6.32-25-generic

Description:
Since the update from 2.6.32-24, the network is very slow.

To define "very slow":
I tested the time for donwloading an image from flickr, using "time wget ..."
- 2.6.32-24: 2-3 seconds
- 2.6.32-25: 30-45 seconds, three out of five tests failed completely.

I tested listening to radio streams:
- with 2.6.32.24, no problem
- with 2.6.32-25, radio streams stop after a few seconds


Hardware:
EeePc 1005HA
02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)

Software:
Ubuntu 10.04.1 LTS
Linux EeePC 2.6.32-24-generic #43-Ubuntu SMP Thu Sep 16 14:17:33 UTC 2010 i686 GNU/Linux


The problem is not related to DNS timeouts.
The can be reproduced every time I boot the new kernel.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-generic 2.6.32-25.44
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-24.43-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-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:  franz      1638 F.... pulseaudio
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: Tue Oct  5 14:32:36 2010
HibernationDevice: RESUME=UUID=1a625c05-8eaf-4909-82be-d7df80c67210
MachineType: ASUSTeK Computer INC. 1005HA
ProcCmdLine: root=UUID=74e09c14-f9ae-458c-84d1-f51cbe4c3c66 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
WpaSupplicantLog:
 
dmi.bios.date: 07/24/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0703
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.:bvr0703:bd07/24/2009: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.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid needs-upstream-testing networking regression-update ubuntu-une

-- 
WLAN (ath9k) very slow since linux 2.6.32-25 
https://bugs.launchpad.net/bugs/655118
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