kernel-packages team mailing list archive

[Niels Holmgaard <niels@xxxxxxxxxxx>]

Thanks. I would still like to point out that the list
http://people.canonical.com/~kernel/info/kernel-version-map.html is not
up to date regarding kernel version 3.16-ubuntu, and that updating it
could have saved some compilation hours in this case.

However, Vanilla 3.15 fails with the same error in dmesg, so the error
is fixed in the upstream kernel between 3.15 and 3.16, and this commit
did not make it into the ubuntu version 3.16.

I have now begun reverse commit bisecting between upstream kernels 3.15
and 3.16, but this will take some time to finish - each kernel build
takes about an hour, and must be run at least a few hours to be certain
if it is good or bad, so best case will be about a month from now.

I hope that this information can help someone - otherwise, for now just
upgrade to upstream version 3.16 or later, and you should be
good.

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1396338

Title:
  [Dell Latitude E7440] Wifi keeps dropping with Intel Wireless 7260

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After the connection is dropped, a hardware switch disconnect/connect is necessary to re-establish connection, the connection does not automatically reappear. The problematic line in the dmesg output is:
  wlan0: deauthenticated from 00:16:b6:01:69:74 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)

  
  The frequency of the problem drops considerably moving to a less congested channel, but it still happens - I am stationary at about 3 meters from the access point. Other devices (Android phones, iPad, other laptops) are connecting to the same access point with no problems at all.

  Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 73)
  	Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4470]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-24-generic 3.16.0-24.32
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  niels      2502 F.... pulseaudio
   /dev/snd/controlC1:  niels      2502 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Nov 25 21:24:21 2014
  HibernationDevice: RESUME=UUID=fe0b3838-4f25-4296-a7c7-872862359ccf
  InstallationDate: Installed on 2014-10-16 (40 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Latitude E7440
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=28b33773-57cd-4cb6-bd65-1c2acadbd079 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-generic N/A
   linux-backports-modules-3.16.0-24-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-10-25 (31 days ago)
  dmi.bios.date: 06/26/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 03HFCG
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd06/26/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn03HFCG:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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