[Bug 630748] Re: iwlagn degrades quickly during normal wifi session

[Delyan Kalchev]

I doubt it since it's not Intel specific issue. It's more general. The
proposed fix here or some similar should be applied to the released
kernels otherwise with each kernel update one will always have to
apply it manually again and again. That's to say the kernel
development team should be notified and they decide on this issue.

On Mon, Nov 1, 2010 at 1:24 AM, Giuliano Paolo Brunetti
<630748 at bugs.launchpad.net> wrote:
> there was a commit around two days ago in the iwlwifi git that maybe will fix this problem, see here:
> http://git.kernel.org/?p=linux/kernel/git/iwlwifi/iwlwifi-2.6.git;a=commit;h=1c3a1973b2d7c46c886d243367dcc5988a4ef704
> maybe it's related, maybe not, i found it searching a fix for the iwl3945 slow throughput.
>
> --
> iwlagn degrades quickly during normal wifi session
> https://bugs.launchpad.net/bugs/630748
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in The Linux Kernel: Unknown
> Status in Release Notes for Ubuntu: Fix Released
> Status in “linux-firmware” package in Ubuntu: Confirmed
> Status in “module-init-tools” package in Ubuntu: Fix Released
> Status in “linux-firmware” source package in Maverick: Confirmed
> Status in “module-init-tools” source package in Maverick: Fix Released
> Status in “linux-firmware” source package in Natty: Confirmed
> Status in “module-init-tools” source package in Natty: Fix Released
>
> Bug description:
> I recently upgraded my lucid laptop (thinkpad X200s) to maverick.  I found after the reboot that my wireless degrades after about 8 hours of ordinary use.  I had 45% packet loss direct to my WAP, and this was easily cleared up by doing "modprobe -r iwlagn; modprobe iwlagn" as root.
>
> I'd not be so quick to file this except that Paul Collins told me that he'd seen the same behavior from upstream 2.6.35.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 10.10
> Package: linux-image-2.6.35-19-generic 2.6.35-19.28
> Regression: Yes
> Reproducible: Yes
> ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
> Uname: Linux 2.6.35-19-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: CONEXANT Analog [CONEXANT Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> AudioDevicesInUse:
>  USER        PID ACCESS COMMAND
>  /dev/snd/controlC0:  nick       2188 F.... pulseaudio
> CRDA: Error: [Errno 2] No such file or directory
> Card0.Amixer.info:
>  Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 47'
>   Mixer name   : 'Conexant CX20561 (Hermosa)'
>   Components   : 'HDA:14f15051,17aa20ff,00100000'
>   Controls      : 14
>   Simple ctrls  : 7
> Card29.Amixer.info:
>  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT22WW-1.04'
>   Mixer name   : 'ThinkPad EC 7XHT22WW-1.04'
>   Components   : ''
>   Controls      : 1
>   Simple ctrls  : 1
> Card29.Amixer.values:
>  Simple mixer control 'Console',0
>   Capabilities: pswitch pswitch-joined penum
>   Playback channels: Mono
>   Mono: Playback [on]
> Date: Sun Sep  5 11:24:24 2010
> EcryptfsInUse: Yes
> HibernationDevice: RESUME=UUID=093be503-d248-45fa-a7fe-77cdd35c0f5a
> MachineType: LENOVO 7465CTO
> ProcCmdLine: root=UUID=5237fceb-23d0-412d-84d9-b8f8b3bf28af ro quiet splash
> ProcEnviron:
>  LC_COLLATE=C
>  PATH=(custom, user)
>  LANG=en_US.UTF-8
>  SHELL=/bin/bash
> RelatedPackageVersions: linux-firmware 1.38
> SourcePackage: linux
> WpaSupplicantLog:
>
> dmi.bios.date: 06/25/2009
> dmi.bios.vendor: LENOVO
> dmi.bios.version: 6DET55WW (3.05 )
> dmi.board.name: 7465CTO
> dmi.board.vendor: LENOVO
> dmi.board.version: Not Available
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias: dmi:bvnLENOVO:bvr6DET55WW(3.05):bd06/25/2009:svnLENOVO:pn7465CTO:pvrThinkPadX200s:rvnLENOVO:rn7465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 7465CTO
> dmi.product.version: ThinkPad X200s
> dmi.sys.vendor: LENOVO
>
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iwlagn degrades quickly during normal wifi session
https://bugs.launchpad.net/bugs/630748
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