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]
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