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[Bug 1332871] Re: [Dell XPS 13 9333] Wifi drops on Intel Wireless 7260 when unplugged from charging cable.

 

Niko: We recently incorporated some fixes into 14.04 to fix some
disconnection issues seen with Intel 7260 wireless. Could you ensure
that your system is fully up to date, reboot (making sure that you boot
into the official trusty 3.13 kernel and not any newer kernel which you
installed for testing), and let me know whether or not you're still
having problems? If you are then we can try to find what has changed in
3.16 to fix your problems. Thanks!

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https://bugs.launchpad.net/bugs/1332871

Title:
  [Dell XPS 13 9333] Wifi drops on Intel Wireless 7260 when unplugged
  from charging cable.

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I can't use wifi with my home router (Netwjork 150Mbps) while plugged off from charging cable.
  When I am not plugged into the charging cable wifi might work a while but soon the signal will drop into just one bar and network will become unusable. As soon as I plug back the charging cable the signal also comes back and network is usable again.

  I think I do not have this problem with ASUS RT-N53  which I have in
  the office.

  Syslog output when I plug in my charging cable:
  http://paste.ubuntu.com/7681576/

  Output of sudo lshw -C network: http://paste.ubuntu.com/7681584/

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-29-generic 3.13.0-29.53
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  niko       2331 F.... pulseaudio
   /dev/snd/pcmC1D0p:   niko       2331 F...m pulseaudio
   /dev/snd/controlC0:  niko       2331 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sat Jun 21 22:15:58 2014
  HibernationDevice: RESUME=UUID=8b122ffb-2f18-48be-a69d-6d3cebef0f39
  InstallationDate: Installed on 2014-04-16 (65 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416)
  MachineType: Dell Inc. XPS13 9333
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-29-generic.efi.signed root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-29-generic N/A
   linux-backports-modules-3.13.0-29-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/19/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0GFTRT
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/19/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS13 9333
  dmi.sys.vendor: Dell Inc.

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