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Message #128734
[Bug 1471794] AlsaInfo.txt
apport information
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1471794/+attachment/4435151/+files/AlsaInfo.txt
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https://bugs.launchpad.net/bugs/1471794
Title:
Wifi slow on Intel Corporation Centrino Ultimate-N 6300
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hello,
On Intel Corporation Centrino Ultimate-N 6300 who use iwlwifi, the Wifi goes approximately (in my home) to 15MB/s in up and down on Windows 7, but it goes only to 5 - 6MB/s down, and 1 - 3MB/s up on Linux.
Before Ubuntu 11.04 → It was slow.
After Ubuntu 11.04 → It was slow.
On Ubuntu 11.04 (Only for test): The down speed is approximately
11MB/s and the up speed is approximately: 6 - 8MB/s
The driver contain a regression for speed performance.
Currently I use Ubuntu 14.04 LTS with Linux 3.18.1 (Vivid package) but the speed is already slow.
The range of the card is reduced, and I take sometimes 2 - 5min to discover a network.
Connection/disconnection to an other network can make a bug were the
fastest way to change network is to disable/enable the card (if it
works), or reboot the computer.
It make this card absolutely not reliable because of the driver on Linux.
---
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-11-24 (245 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
NonfreeKernelModules: fglrx
Package: linux (not installed)
Tags: trusty
Uname: Linux 3.18.1-031801-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: valentin 4266 F.... pulseaudio
/dev/snd/controlC0: valentin 4266 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-11-24 (245 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. Latitude E6540
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=83928b5e-863a-4f13-98b2-f288f6a095dc ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
RelatedPackageVersions:
linux-restricted-modules-3.13.0-46-generic N/A
linux-backports-modules-3.13.0-46-generic N/A
linux-firmware 1.127.14
StagingDrivers: zram
Tags: trusty staging
Uname: Linux 3.13.0-46-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/19/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0725FP
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd05/19/2015:svnDellInc.:pnLatitudeE6540:pvr01:rvnDellInc.:rn0725FP:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6540
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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References