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[Bug 1471794] Re: Wifi slow on Intel Corporation Centrino Ultimate-N 6300

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Valentin Crone <1471794@xxxxxxxxxxxxxxxxxx>
Date: Tue, 28 Jul 2015 13:14:32 -0000
Reply-to: Bug 1471794 <1471794@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
apport information

** Tags added: apport-collected trusty

** Description changed:

  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.
+ 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

** Attachment added: "ProcEnviron.txt"
   https://bugs.launchpad.net/bugs/1471794/+attachment/4435150/+files/ProcEnviron.txt

** Tags added: staging

** Description changed:

  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.

-- 
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/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

[Bug 1471794] [NEW] Wifi slow on Intel Corporation Centrino Ultimate-N 6300
From: Valentin Crone, 2015-07-06