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[Niko Nieminen <niko@xxxxxxxxxxxx>]

I did not use 12.04 which was preinstalled very long, but I think the problem did NOT occur in that release.
My wireless hotspot is Netwjork 150mbps which is re-branded name for Tenda W268R 4-Port Switch 150Mbps Wireless-N Broadband Router I think.
I am using 802.11 b/g/n mixed mode.
Now I reconfigured my AP to use only channel 11 instead of auto-select and only mode 11g instead of mixed mode.
Distance from AP is about 5 meters there is one corner between the ap and my laptop but nothing changes even if I bring my laptop next to router.



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

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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:
  Confirmed

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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