Valentin Crone, could you please test the latest mainline kernel (4.2-rc4) and advise to the results?
** Tags added: latest-bios-a15 ** 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. + 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 - --- + It make this card absolutely not reliable because of the driver on + Linux. + + --- 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 + 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 + 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. ** Tags added: natty -- 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: 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 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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