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[jhouse <1305305@xxxxxxxxxxxxxxxxxx>]

David Carter -  that's no good!   My guess would be that you now have a
missing firmware problem.

Run  the following command in a terminal:  "ls /lib/firmware/iwlwifi-7*"
you should have at least one file listed.

I actually have two:
/lib/firmware/iwlwifi-7260-7.ucode  
/lib/firmware/iwlwifi-7260-8.ucode

If you don't then you definitely have missing firmware .  If you do have
a file, you might not have the correct one for your edition of the
wireless card.

Note that I upgraded to Ubuntu 14.04 (rather than  clean install), and I
had put the  -7.ucode version of the firmware file in place months back
in order to get the card to work at all (the older kernels didn't
support this card at all).

Here's a summary of how I installed backports for this card and the
firmware:


Download the ucode file for the 3.13 kernel here: 
http://wireless.kernel.org/en/users/Drivers/iwlwifi?action=AttachFile&do=get&target=iwlwifi-7260-ucode-22.0.6.0.tgz#Firmware

Download backports for 3.13 here:  
http://drvbp1.linux-foundation.org/~mcgrof/rel-html/backports/

Un-tar the downloaded files:

tar xvf backports-3.13.2-1.tar.xz
tar xvf iwlwifi-7260*

Then build backports for iwlwifi

cd backports-3.13.2-1/
make defconfig-iwlwifi
make
sudo make install

Then copy the firmware ucode file to /lib/firmware
cd ..
cd iwlwifi*
sudo cp iwlwifi* /lib/firmware

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1305305

Title:
  8086:08b1 [Sony VAIO SVP1321M2E] Wifi keeps dropping.

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Using a Sony Vaio Pro 13 with Ubuntu 14.04 the wifi keeps dropping. Sometimes all the time, at times after a bit longer (~10 min). A few packages ago it didn't drop, but was really, really, slow. Now it completely drops. Adding the following to modprobe.conf made no change:
  options iwlwifi 11ac_disable=1
  options iwlwifi 11n_disable=1

  After each new row I ran:
  sudo modprobe -rfv iwlwifi
  sudo modprobe -v iwlwifi

  Tried turning off the power management of wlan0 without any change.

  WORKAROUND: Within 2 m I have full speed and no disconnects.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-generic 3.13.0.19.23
  ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6
  Uname: Linux 3.13.0-19-generic x86_64
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  daniel     2105 F.... pulseaudio
   /dev/snd/controlC1:  daniel     2105 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Apr  9 22:44:08 2014
  HibernationDevice: RESUME=UUID=a8a44495-3583-451d-99c8-b5be0e8cf0ca
  InstallationDate: Installed on 2014-04-09 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323)
  MachineType: Sony Corporation SVP1321M2EB
  ProcEnviron:
   LANGUAGE=sv
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=sv_SE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-19-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-19-generic N/A
   linux-backports-modules-3.13.0-19-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/21/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: R1043V7
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR1043V7:bd11/21/2013:svnSonyCorporation:pnSVP1321M2EB:pvrC60C0754:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVP1321M2EB
  dmi.product.version: C60C0754
  dmi.sys.vendor: Sony Corporation

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