kernel-packages team mailing list archive

[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

On Sun, May 04, 2014 at 03:52:02PM -0000, Emmanuel Grumbach wrote:
> can someone have a sniffer capture of this? This would be very useful.
> One more point - if you can increase the debug level of the supplicant, this would be nice.

If anyone wants to try this, I have a script which might help. It can be
downloaded from http://people.canonical.com/~sforshee/wifi-debug. After
downloading you need to do the following in a terminal after changing to
the directory where you donwloaded the file:

  sudo apt-get install iw tshark
  chmod +x wifi-debug
  sudo ./wifi-debug -p

Wait for the problem to occur, then press Ctrl-C and wait for the script
to finish. After it completes you will have a file named
wifi-debug-files.tar.gz with the requested data.

Note that this file will be large (potentially very large if it runs for
a long time) and may contain some private information, though WPA/WEP
keys should not be present and data sent on an encrypted network will be
encrypted. However you still may want to share the file in a less public
way, e.g. upload it to dropbox or similar and send Emmanuel or me a
link.

And if anyone has the know-how to capture a sniff using a monitor
interface on a separate machine, that would be preferable to the method
used in the script.

Thanks!

> Also, there are 2 -8 firmware. One is 22.15.8.0, the other one is 22.24.8.0. Can you please let me know which one you are using?
> The version appear at load time.

Emmanuel: The firmware version in our linux-firmware package is
22.24.8.0.

-- 
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/1293569

Title:
  iwlwifi-7260-8.ucode causes network disconnections problems

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

Bug description:
  Running 14.04 (beta) with Kernel 3.13.0-17-generic

  I've encountered a strange and reproducible error with the
  iwlwifi-7260-8.ucode firmware.

  This laptop is a Dell XPS 12 (haswell). With the -8 firmware, it will
  connect fine to wifi for 30 or 40 mins at a time, then will start
  dropping connections repeatedly. Even modprobe -r unloading and
  reloading doesn't fix the issue, only a reboot will temporarily solve
  it for 40 mins at a time.

  Moreover, here is what's strange, is during these episodes of
  disconnection it seems to affect the actual router (2Wire), as the
  other devices in the house will also start to have issues (very slow
  connections, limited range,etc).  Once I reboot this laptop everything
  and all devices will return to normal.

  This issue has been fixed by me manually removing the -8 firware from
  /lib/firmware and letting the -7 firmware load instead. Since that has
  been done there has not been a single issue of this happening (now
  going on 4 days).

  let me know if there is any other information you would like me to
  provide.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-firmware 1.126
  ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
  Uname: Linux 3.13.0-17-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Mar 17 08:13:25 2014
  Dependencies:
   
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-03-07 (9 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140307)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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