kernel-packages team mailing list archive
-
kernel-packages team
-
Mailing list archive
-
Message #29511
[Bug 994104] Re: Wireless performance issues on kernel 3.4.0-1-generic (iwlwifi)
Vikrant, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .
If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:
apport-collect -p linux <replace-with-bug-number>
Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.12
This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
As well, please remove the tag:
needs-upstream-testing
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/994104
Title:
Wireless performance issues on kernel 3.4.0-1-generic (iwlwifi)
Status in The Linux Kernel:
New
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
I was expecting this to happen but was too lazy on reporting issues on
mainline kernels earlier. But now since the 3.4 kernels has made it to
quantal repos, I am affected by it.
The issue is that on 3.4 kernels (I have tried all mainline kernels
RC1 to RC5), my wireless performance goes for toss.
I am attaching a screenshot as well on current wireless signal. At
same location on my previous precise kernel ( 3.2.0.24) the
connection speed is around 52 mpbs (average), but on this kernel the
connection is very unstable. As I connect (or when system starts up),
the connection speed is like 40mbps, and this degrades in a minute or
so to 19 mbps, then to 6 mbps and eventually connection becomes
crazily slow on 1 mbps.
This is reproducible every time.
Hopefully, apport has collected enough information but I will try to
provide some more info as part of description.
$ lspci -v
03:00.0 Network controller: Intel Corporation Centrino Wireless-N + WiMAX 6150 (rev 67)
Subsystem: Intel Corporation Centrino Wireless-N + WiMAX 6150 BGN
Flags: bus master, fast devsel, latency 0, IRQ 48
Memory at f5600000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
Let me know what information I can provide to get help resolve this
blocking issue, which wont let me try/test kernel 3.4 further.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.4.0-1-generic 3.4.0-1.3
ProcVersionSignature: Ubuntu 3.4.0-1.3-generic 3.4.0-rc5
Uname: Linux 3.4.0-1-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: kx 2169 F.... pulseaudio
/dev/snd/controlC0: kx 2169 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf6a00000 irq 49'
Mixer name : 'Realtek ALC269VB'
Components : 'HDA:10ec0269,10431b33,00100100'
Controls : 24
Simple ctrls : 13
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf4080000 irq 17'
Mixer name : 'Nvidia GPU 15 HDMI/DP'
Components : 'HDA:10de0015,10de0101,00100100'
Controls : 24
Simple ctrls : 4
Date: Thu May 3 22:20:25 2012
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
MachineType: ASUSTeK Computer Inc. G74Sx
ProcEnviron:
LANGUAGE=en_IN
TERM=xterm
PATH=(custom, user)
LANG=en_IN.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.4.0-1-generic root=UUID=ad1c5163-5aee-4c62-8395-af61ae2995a7 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.4.0-1-generic N/A
linux-backports-modules-3.4.0-1-generic N/A
linux-firmware 1.80
SourcePackage: linux
StagingDrivers: rts5139 mei
UpgradeStatus: Upgraded to quantal on 2011-11-17 (167 days ago)
dmi.bios.date: 09/23/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: G74Sx.203
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: G74Sx
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.:bvrG74Sx.203:bd09/23/2011:svnASUSTeKComputerInc.:pnG74Sx:pvr1.0:rvnASUSTeKComputerInc.:rnG74Sx:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: G74Sx
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/994104/+subscriptions