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[Tim Hunter <1456285@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Very intermittent and inconsistent wireless connections. Occasionally
the indicator will show that the connection has been lost, but more
often it seems that the indicator just shows low signal strength -- as
it generally does even when the connection is working well.

I'm pretty sure this is not an access-point problem because we have
other devices using the same network without any problem.

Here's some of the additional information that has been requested in
other discussions of similar problems, although I don't fully understand
what all these results mean.

I have these three firmware files in /lib/firmware:
[code]
-rw-r--r--  1 root root  683236 Nov 24 09:42 iwlwifi-7260-7.ucode
-rw-r--r--  1 root root  679780 Dec  1 09:16 iwlwifi-7260-8.ucode
-rw-r--r--  1 root root  680508 Dec  1 14:45 iwlwifi-7260-9.ucode
[/code]

dmesg | grep iwlwifi | grep firmware
[code]
[   11.974201] iwlwifi 0000:03:00.0: loaded firmware version 22.24.8.0 op_mode iwlmvm
[/code]

lspci -nn | grep 0280
[code]
03:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 83)
[/code]

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-52-generic 3.13.0-52.86
ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
Uname: Linux 3.13.0-52-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  timh       2011 F.... pulseaudio
                      timh       2801 F.... pulseaudio
 /dev/snd/controlC0:  timh       2011 F.... pulseaudio
                      timh       2801 F.... pulseaudio
CurrentDesktop: XFCE
Date: Mon May 18 12:05:48 2015
HibernationDevice: RESUME=UUID=799c429f-edb4-438c-bbc7-386342199d23
InstallationDate: Installed on 2014-03-12 (432 days ago)
InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
MachineType: LENOVO 20ARCTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-52-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-52-generic N/A
 linux-backports-modules-3.13.0-52-generic  N/A
 linux-firmware                             1.127.11
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2015-03-16 (63 days ago)
dmi.bios.date: 02/10/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET71WW (2.21 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20ARCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20ARCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20ARCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20ARCTO1WW
dmi.product.version: ThinkPad T440s
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1456285

Title:
  Intel 7260 problems on Thinkpad T440s

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Very intermittent and inconsistent wireless connections. Occasionally
  the indicator will show that the connection has been lost, but more
  often it seems that the indicator just shows low signal strength -- as
  it generally does even when the connection is working well.

  I'm pretty sure this is not an access-point problem because we have
  other devices using the same network without any problem.

  Here's some of the additional information that has been requested in
  other discussions of similar problems, although I don't fully
  understand what all these results mean.

  I have these three firmware files in /lib/firmware:
  [code]
  -rw-r--r--  1 root root  683236 Nov 24 09:42 iwlwifi-7260-7.ucode
  -rw-r--r--  1 root root  679780 Dec  1 09:16 iwlwifi-7260-8.ucode
  -rw-r--r--  1 root root  680508 Dec  1 14:45 iwlwifi-7260-9.ucode
  [/code]

  dmesg | grep iwlwifi | grep firmware
  [code]
  [   11.974201] iwlwifi 0000:03:00.0: loaded firmware version 22.24.8.0 op_mode iwlmvm
  [/code]

  lspci -nn | grep 0280
  [code]
  03:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 83)
  [/code]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-52-generic 3.13.0-52.86
  ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
  Uname: Linux 3.13.0-52-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  timh       2011 F.... pulseaudio
                        timh       2801 F.... pulseaudio
   /dev/snd/controlC0:  timh       2011 F.... pulseaudio
                        timh       2801 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Mon May 18 12:05:48 2015
  HibernationDevice: RESUME=UUID=799c429f-edb4-438c-bbc7-386342199d23
  InstallationDate: Installed on 2014-03-12 (432 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  MachineType: LENOVO 20ARCTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-52-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-52-generic N/A
   linux-backports-modules-3.13.0-52-generic  N/A
   linux-firmware                             1.127.11
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2015-03-16 (63 days ago)
  dmi.bios.date: 02/10/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET71WW (2.21 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20ARCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50512 STD
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20ARCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20ARCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20ARCTO1WW
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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