kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

robalrr, let the scope of this report be returning the speed to that of
Saucy. Once that issue is dealt with, then we may refocus onto going
from Saucy speed to optimized.

Hence, the next step is to fully commit bisect from kernel Saucy to
Trusty in order to identify the last good kernel commit, followed
immediately by the first bad one. This will allow for a more expedited
analysis of the root cause of your issue.  Could you please do this
following https://wiki.ubuntu.com/Kernel/KernelBisection ? Please note,
finding adjacent kernel versions is not fully commit bisecting.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

** Tags added: regression-release

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https://bugs.launchpad.net/bugs/1392038

Title:
  8086:08b2 [Lenovo ThinkPad Edge E440] Slow WiFi with Intel 7260
  iwlwifi

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  With Utopic and Trusty, when the wireless network is always connected
  to the router, it is very slow and sometimes it does not work.

  Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 73)
  	Subsystem: Intel Corporation Wireless-N 7260 [8086:4262]

  sudo lshw -C network
    *-network
         description: Wireless interface
         product: Wireless 7260
         vendor: Intel Corporation
         physical id: 0
         bus info: pci@0000:04:00.0
         logical name: wlan0
         version: 73
         serial: ac:7b:a1:a0:51:86
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
         configuration: broadcast=yes driver=iwlwifi driverversion=3.16.0-24-generic firmware=25.222.9.0 ip=192.168.31.3 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
         resources: irq:46 memory:f0c00000-f0c01fff

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-24-generic 3.16.0-24.32
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  robalrr    2699 F.... pulseaudio
   /dev/snd/pcmC1D0p:   robalrr    2699 F...m pulseaudio
   /dev/snd/controlC1:  robalrr    2699 F.... pulseaudio
   /dev/snd/controlC0:  robalrr    2699 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov 12 20:38:17 2014
  HibernationDevice: RESUME=UUID=309fa850-dd60-4067-bb77-8b7dc8860739
  InstallationDate: Installed on 2014-08-19 (85 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 20C50050US
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=f0d8ed1a-d52d-406a-b243-8a360d7d4761 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-generic N/A
   linux-backports-modules-3.16.0-24-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-09-30 (43 days ago)
  dmi.bios.date: 03/21/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J9ET61WW (1.61 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20C50050US
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrJ9ET61WW(1.61):bd03/21/2014:svnLENOVO:pn20C50050US:pvrThinkPadEdgeE440:rvnLENOVO:rn20C50050US:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20C50050US
  dmi.product.version: ThinkPad Edge E440
  dmi.sys.vendor: LENOVO

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