The description here isn't very informative. It's slow compared to what?
The same machine booted in Windows? Previous Ubuntu releases?
One probable cause is that transmit aggregation as been enabled by
default for some Intel hardware due to firmware bugs which caused
unstable connections, which will definitely impact performance on
802.11n networks. If you know that your hardware worked fine with a
previous Ubuntu release, or if you just want to see if it helps, you can
boot Ubuntu with the iwlwifi.11n_disable=8 option to force transmit
aggregation to be enabled. If you find this helps and gives you a stable
connection, you can make this option permanent by creating a file named
/etc/modprobe.d/iwlwifi-11n.conf which has the following text:
options iwlwifi 11n_disable=8
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => 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/1341068
Title:
Intel Corporation Centrino Advanced-N 6235 wifi is slow
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Intel Corporation Centrino Advanced-N 6235 wifi is slow
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: orlexy 2126 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Jul 12 10:37:18 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-06-27 (14 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20042
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic
root=UUID=70e21e10-256e-4d84-b19a-6fb393f2b46d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-30-generic N/A
linux-backports-modules-3.13.0-30-generic N/A
linux-firmware 1.127.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/28/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 29CN38WW(V2.15)
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnLENOVO:bvr29CN38WW(V2.15):bd01/28/2011:svnLENOVO:pn20042:pvrLenovoG560:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: 20042
dmi.product.version: Lenovo G560
dmi.sys.vendor: LENOVO
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1341068/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
