wireless connection slow and unstable after kernel update

Bug #765557 reported by Andreas Kopke
22
This bug affects 3 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Undecided
Unassigned

Bug Description

Works fine for a few packets then degrades, seems to affect only 802.11n connections after updating the kernel two days ago.

802.11g mode works fine

Description: Ubuntu Natty (development branch)
Release: 11.04

linux-image-2.6.38-8-generic:
  Installiert: 2.6.38-8.42
  Kandidat: 2.6.38-8.42
  Versionstabelle:
 *** 2.6.38-8.42 0
        500 http://de.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC271X Analog [ALC271X Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: koepke 1709 F.... pulseaudio
 /dev/snd/pcmC0D0p: koepke 1709 F...m pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0600000 irq 43'
   Mixer name : 'Realtek ALC271X'
   Components : 'HDA:10ec0269,10250364,00100100'
   Controls : 18
   Simple ctrls : 10
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xcfedc000 irq 44'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Tue Apr 19 08:18:57 2011
HibernationDevice: RESUME=UUID=3000f700-587d-46c8-a616-855ef0c7bf80
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Acer Aspire 3820
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=0c310ce9-653a-4176-a5fc-f453a31a9427 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.50
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-04-17 (1 days ago)
UserAsoundrc:
 pcm.headset {
    type bluetooth
    device 00:02:76:13:22:4C
    profile "headset"
 }
dmi.bios.date: 05/04/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.13
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Aspire 3820
dmi.board.vendor: Acer
dmi.board.version: V1.13
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.13
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.13:bd05/04/2010:svnAcer:pnAspire3820:pvrV1.13:rvnAcer:rnAspire3820:rvrV1.13:cvnAcer:ct10:cvrV1.13:
dmi.product.name: Aspire 3820
dmi.product.version: V1.13
dmi.sys.vendor: Acer

Revision history for this message
Andreas Kopke (koepke) wrote :
Revision history for this message
Andreas Kopke (koepke) wrote :

Works fine for a few packets then degrades, seems to affect only 802.11n connections
802.11g mode works fine

Revision history for this message
Jeremy Foshee (jeremyfoshee) wrote :

natty has no proposed candidates ergo, this cannot be a regression-proposed bug. Removing the tag.

~JFo

tags: removed: regression-proposed
Brad Figg (brad-figg)
Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
penalvch (penalvch) wrote :

Andreas Kopke, thank you for reporting this and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

description: updated
Changed in linux (Ubuntu):
status: Confirmed → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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