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


I tested 3.16-rc2 and I did not have wifi at all in that build.
See dmesg in attachment.

I added tags kernel-bug-exists-upstream kernel-bug-exists-
upstream-3.16-rc2, please feel free to modify if I did something wrong.

** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-3.16-rc2

** Attachment added: "dmesg 3.16-rc2"

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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

Status in “linux” package in Ubuntu:

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:

  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
  Uname: Linux 3.13.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
   /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
   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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