kernel-packages team mailing list archive

[Øyvind Stegard <oyvinst@xxxxxxxxxx>]

Public bug reported:

Kernel 3.11.0-15-generic appears to regress iwlwifi performance
significantly.

I get about 400-500KiB/s sustained transfer rate with 3.11.0-15-generic,
while speed is over 7MiB/s with either 3.11.0-12-generic or mainline
kernel v3.11.10.3-saucy (same access point).

This  bug is likely dupe of bug 1270208, but I was asked to file it
separately due to hardware differences.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.23
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  oyvind     2102 F.... pulseaudio
 /dev/snd/controlC0:  oyvind     2102 F.... pulseaudio
Date: Tue Jan 21 21:13:24 2014
HibernationDevice: RESUME=UUID=0f94207f-b6d7-4b98-8f13-eaaeebb896b1
InstallationDate: Installed on 2013-11-02 (80 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Dell Inc. Latitude E6510
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=nb_NO:nb:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=nb_NO.UTF-8
 SHELL=/bin/bash
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=7816e956-27c6-48c4-9ce2-3b22b5842157 ro quiet nosplash nouveau.perflvl_wr=7777
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-15-generic N/A
 linux-backports-modules-3.11.0-15-generic  N/A
 linux-firmware                             1.116.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0N5KHN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA16:bd12/05/2013:svnDellInc.:pnLatitudeE6510:pvr0001:rvnDellInc.:rn0N5KHN:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6510
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-bug saucy

-- 
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https://bugs.launchpad.net/bugs/1271307

Title:
  iwlwifi: tx speed regression with kernel 3.11.0-15-generic [Dell
  Latitude E6510]

Status in “linux” package in Ubuntu:
  New

Bug description:
  Kernel 3.11.0-15-generic appears to regress iwlwifi performance
  significantly.

  I get about 400-500KiB/s sustained transfer rate with
  3.11.0-15-generic, while speed is over 7MiB/s with either
  3.11.0-12-generic or mainline kernel v3.11.10.3-saucy (same access
  point).

  This  bug is likely dupe of bug 1270208, but I was asked to file it
  separately due to hardware differences.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.23
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  oyvind     2102 F.... pulseaudio
   /dev/snd/controlC0:  oyvind     2102 F.... pulseaudio
  Date: Tue Jan 21 21:13:24 2014
  HibernationDevice: RESUME=UUID=0f94207f-b6d7-4b98-8f13-eaaeebb896b1
  InstallationDate: Installed on 2013-11-02 (80 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. Latitude E6510
  MarkForUpload: True
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   LANGUAGE=nb_NO:nb:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=nb_NO.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=7816e956-27c6-48c4-9ce2-3b22b5842157 ro quiet nosplash nouveau.perflvl_wr=7777
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/05/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A16
  dmi.board.name: 0N5KHN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA16:bd12/05/2013:svnDellInc.:pnLatitudeE6510:pvr0001:rvnDellInc.:rn0N5KHN:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6510
  dmi.product.version: 0001
  dmi.sys.vendor: Dell Inc.

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