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[Pilot6 <1398585@xxxxxxxxxxxxxxxxxx>]

@Christopher

What fixed the bug upstream?

@BruceWouaigne

Is this bug still there with 3.16.0-26.35 or 3.16.0-25.33?

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https://bugs.launchpad.net/bugs/1398585

Title:
  [Inter 7260] Very slow and unstable WIFI

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Using an Asus Zenbook UX303L, with the last kernel, wifi is almost
  unusable. The connection is VERY slow and keeps dropping.

  There was absolutely no problem with the linux-image-3.13.0-40-generic
  kernel.

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

  lspci -knn | grep Net -A2

  02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
      Subsystem: Intel Corporation Dual Band Wireless-N 7260 [8086:c160]
      Kernel driver in use: iwlwifi

  Here is the speedtest output with the last kernel:

  ☺  ~⮀ speedtest
  Retrieving speedtest.net configuration...
  Retrieving speedtest.net server list...
  Testing from Orange (***)...
  Selecting best server based on latency...
  Hosted by iperf.fr (Rouen) [315.45 km]: 15.149 ms
  Testing download speed........................................
  Download: 19.17 Mbits/s
  Testing upload speed..................................................
  Upload: 30.53 Mbits/s

  And after a rollback on the 3.13

  ☺  ~⮀ speedtest
  Retrieving speedtest.net configuration...
  Retrieving speedtest.net server list...
  Testing from Orange (***)...
  Selecting best server based on latency...
  Hosted by TestDebit.info (Limoges) [264.48 km]: 13.848 ms
  Testing download speed........................................
  Download: 61.95 Mbits/s
  Testing upload speed..................................................
  Upload: 71.33 Mbits/s

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-25-generic 3.16.0-25.33~14.04.2
  ProcVersionSignature: Ubuntu 3.16.0-25.33~14.04.2-generic 3.16.7
  Uname: Linux 3.16.0-25-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Tue Dec  2 22:39:01 2014
  InstallationDate: Installed on 2014-11-20 (12 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bruce      2241 F.... pulseaudio
   /dev/snd/pcmC1D0p:   bruce      2241 F...m pulseaudio
   /dev/snd/controlC1:  bruce      2241 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=8a3f827c-19e2-473a-aeef-d988e7b1be88
  InstallationDate: Installed on 2014-11-20 (12 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: ASUSTeK COMPUTER INC. UX303LN
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash acpi_osi= vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-25.33~14.04.2-generic 3.16.7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-25-generic N/A
   linux-backports-modules-3.16.0-25-generic  N/A
   linux-firmware                             1.127.8
  Tags:  trusty
  Uname: Linux 3.16.0-25-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 06/23/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX303LN.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX303LN
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LN.203:bd06/23/2014:svnASUSTeKCOMPUTERINC.:pnUX303LN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LN:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX303LN
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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