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[csmith <1242724@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Laptop is a Lenovo ThinkPad w530.

Wireless PCI card:
csmith@csmith-w530:~$ lspci 
  ...
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)


Downgrading to linux-firmware v1.79 appears to fix the problem, so I suspect the problem was introduced with v1.79.7, as I was previously at v1.79.6 with no problems (note I can't find v1.79.6 anymore.)

Symptoms include:

- Frequent wifi drops (mulitple times per minute).
- Large ping times from other machines (up to >1000ms observed, ~1.3 ms the expected norm).
- Dropped ping requests.
- Kernel messages as follows:
  [ 8599.406488] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues

I find via google frequent references to the above kernel message with
this device on other distros, so I don't think this is isolated to
anything ubuntu or thinkpad specific.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-firmware 1.79.7
ProcVersionSignature: Ubuntu 3.8.0-31.46~precise1-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
NonfreeKernelModules: zfs zcommon znvpair zavl zunicode
ApportVersion: 2.0.1-0ubuntu17.5
Architecture: amd64
Date: Mon Oct 21 15:13:20 2013
Dependencies:
 
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-firmware
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug precise running-unity

** Attachment added: "lshw output"
   https://bugs.launchpad.net/bugs/1242724/+attachment/3886260/+files/lshw.out

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1242724

Title:
  Latest intel wifi firmware results in unstable wifi connection

Status in “linux-firmware” package in Ubuntu:
  New

Bug description:
  Laptop is a Lenovo ThinkPad w530.

  Wireless PCI card:
  csmith@csmith-w530:~$ lspci 
    ...
  03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)

  
  Downgrading to linux-firmware v1.79 appears to fix the problem, so I suspect the problem was introduced with v1.79.7, as I was previously at v1.79.6 with no problems (note I can't find v1.79.6 anymore.)

  Symptoms include:

  - Frequent wifi drops (mulitple times per minute).
  - Large ping times from other machines (up to >1000ms observed, ~1.3 ms the expected norm).
  - Dropped ping requests.
  - Kernel messages as follows:
    [ 8599.406488] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues

  I find via google frequent references to the above kernel message with
  this device on other distros, so I don't think this is isolated to
  anything ubuntu or thinkpad specific.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-firmware 1.79.7
  ProcVersionSignature: Ubuntu 3.8.0-31.46~precise1-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  NonfreeKernelModules: zfs zcommon znvpair zavl zunicode
  ApportVersion: 2.0.1-0ubuntu17.5
  Architecture: amd64
  Date: Mon Oct 21 15:13:20 2013
  Dependencies:
   
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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