Titien, 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 just make a comment to this. 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. ** Description changed: - (Really sorry, I did not know in what section I had to put this bug) + I had the same problem on Ubuntu 12.04, maybe a problem in the kernel. + For no reason my wifi connection slowed down. I had less than 1B/s. - For no reason my wifi connection slowed down. I had less than 1B/s. I - solved the issue by doing : - - - sudo rmmod iwlwifi - - + WORKAROUND: sudo rmmod iwlwifi sudo modprobe iwlwifi 11n_disable=1 - and to apply this after reboot I created /etc/modprobe.d/iwlwifi.conf - and add in it : - + and to apply this after reboot I created /etc/modprobe.d/iwlwifi.conf and add in it : options iwlwifi 11n_disable=1 Like it's told here : http://forum.ubuntu-fr.org/viewtopic.php?id=941711 - - - but I do not what theses commands exactly do. I had the same problem on Ubuntu 12.04, maybe a problem in the kernel. - --- + --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu13+elementary3~precise1 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog] - Subdevices: 2/2 - Subdevice #0: subdevice #0 - Subdevice #1: subdevice #1 + **** List of CAPTURE Hardware Devices **** + card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog] + Subdevices: 2/2 + Subdevice #0: subdevice #0 + Subdevice #1: subdevice #1 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: atom 3135 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: atom 3135 F.... pulseaudio Card0.Amixer.info: - Card hw:0 'PCH'/'HDA Intel PCH at 0xf7a10000 irq 50' - Mixer name : 'Intel PantherPoint HDMI' - Components : 'HDA:11068446,15581550,00100000 HDA:80862806,80860101,00100000' - Controls : 49 - Simple ctrls : 21 + Card hw:0 'PCH'/'HDA Intel PCH at 0xf7a10000 irq 50' + Mixer name : 'Intel PantherPoint HDMI' + Components : 'HDA:11068446,15581550,00100000 HDA:80862806,80860101,00100000' + Controls : 49 + Simple ctrls : 21 DistroRelease: elementary 0.2 HibernationDevice: RESUME=UUID=3be0eafe-b14a-422c-a86a-0ddf203870ef InstallationMedia: elementary OS 0.2 "Luna" - Build amd64 LIVE Binary 20120909-14:36 MachineType: CLEVO CO. W150ER Package: linux (not installed) ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=fr_FR.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=fr_FR.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic root=UUID=fe60b9c5-8b14-4f74-818a-34e70cf44c12 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27 RelatedPackageVersions: - linux-restricted-modules-3.2.0-30-generic N/A - linux-backports-modules-3.2.0-30-generic N/A - linux-firmware 1.79.1 + linux-restricted-modules-3.2.0-30-generic N/A + linux-backports-modules-3.2.0-30-generic N/A + linux-firmware 1.79.1 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no StagingDrivers: mei Tags: precise staging Uname: Linux 3.2.0-30-generic x86_64 UnreportableReason: Ce paquet n'est pas officiellement pris en charge par elementary. Veuillez désinstaller tout paquet tiers et réessayer. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 03/14/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: W150ER dmi.board.vendor: CLEVO CO. dmi.board.version: N/A dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 9 dmi.chassis.vendor: CLEVO CO. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd03/14/2012:svnCLEVOCO.:pnW150ER:pvrN/A:rvnCLEVOCO.:rnW150ER:rvrN/A:cvnCLEVOCO.:ct9:cvrN/A: dmi.product.name: W150ER dmi.product.version: N/A dmi.sys.vendor: CLEVO CO. ** Tags added: latest-bios-4.6.5 needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Triaged => Incomplete ** Changed in: linux (Ubuntu) Importance: Medium => Low ** Summary changed: - very slow wifi + 8086:0887 very slow wifi -- 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/1049257 Title: 8086:0887 very slow wifi Status in “linux” package in Ubuntu: Incomplete Bug description: I had the same problem on Ubuntu 12.04, maybe a problem in the kernel. For no reason my wifi connection slowed down. I had less than 1B/s. WORKAROUND: sudo rmmod iwlwifi sudo modprobe iwlwifi 11n_disable=1 and to apply this after reboot I created /etc/modprobe.d/iwlwifi.conf and add in it : options iwlwifi 11n_disable=1 Like it's told here : http://forum.ubuntu- fr.org/viewtopic.php?id=941711 --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu13+elementary3~precise1 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: atom 3135 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7a10000 irq 50' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:11068446,15581550,00100000 HDA:80862806,80860101,00100000' Controls : 49 Simple ctrls : 21 DistroRelease: elementary 0.2 HibernationDevice: RESUME=UUID=3be0eafe-b14a-422c-a86a-0ddf203870ef InstallationMedia: elementary OS 0.2 "Luna" - Build amd64 LIVE Binary 20120909-14:36 MachineType: CLEVO CO. W150ER Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic root=UUID=fe60b9c5-8b14-4f74-818a-34e70cf44c12 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27 RelatedPackageVersions: linux-restricted-modules-3.2.0-30-generic N/A linux-backports-modules-3.2.0-30-generic N/A linux-firmware 1.79.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no StagingDrivers: mei Tags: precise staging Uname: Linux 3.2.0-30-generic x86_64 UnreportableReason: Ce paquet n'est pas officiellement pris en charge par elementary. Veuillez désinstaller tout paquet tiers et réessayer. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 03/14/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: W150ER dmi.board.vendor: CLEVO CO. dmi.board.version: N/A dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 9 dmi.chassis.vendor: CLEVO CO. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd03/14/2012:svnCLEVOCO.:pnW150ER:pvrN/A:rvnCLEVOCO.:rnW150ER:rvrN/A:cvnCLEVOCO.:ct9:cvrN/A: dmi.product.name: W150ER dmi.product.version: N/A dmi.sys.vendor: CLEVO CO. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1049257/+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
