wlan (AR928X, ath9k) slow since upgrade to natty
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Seth Forshee |
Bug Description
***Fixed in 2.6.39 (oneiric)***
Since upgrade to natty (from lucid) the network connection with my wlan card (AR928X) is awfully slow. The wlan was ok under lucid and reaches full speed when I boot into windows. The LAN-Connection (eth0) in contrast is ok.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-
Regression: Yes
Reproducible: No
ProcVersionSign
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'NVidia'/'HDA NVidia at 0xf0880000 irq 17'
Mixer name : 'Nvidia MCP79/7A HDMI'
Components : 'HDA:111d7675,
Controls : 20
Simple ctrls : 11
Date: Thu Apr 14 23:36:04 2011
Frequency: I don't know.
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: Dell Inc. Studio XPS 1340
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_GB.utf8
LC_MESSAGES=
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.50
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-04-03 (11 days ago)
dmi.bios.date: 03/25/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.vendor: Dell Inc.
dmi.board.version: A14
dmi.chassis.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Studio XPS 1340
dmi.product.
dmi.sys.vendor: Dell Inc.
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
description: | updated |
seems to be a problem with mixed WPA/WPA2 mode on the ath9k driver, the following work-around solves the problem:
sudo rmmod -f ath5k
sudo modprobe ath5k nohwcrypt=1
see also http:// ubuntuforums. org/showthread. php?t=1682388