Alexander List, 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, please just make a comment to this. If reproducible, could you also 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-v3.13-rc6 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. ** Tags added: bios-outdated-1.40 needs-wifi-debug ** Changed in: linux Importance: High => Undecided ** Changed in: linux Status: Confirmed => New ** Changed in: linux Remote watch: bugzilla.intellinuxwireless.org/ #2314 => None ** Summary changed: - 8086:4238 iwlwifi drops connection when using 802.11n + 8086:4238 [Lenovo ThinkPad X201] iwlwifi drops connection when using 802.11n ** Attachment removed: "version.log" https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253916/+files/version.log ** Attachment removed: "version.log" https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253938/+files/version.log ** Attachment removed: "lspci-vnvn.log" https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253939/+files/lspci-vnvn.log ** 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/1034740 Title: 8086:4238 [Lenovo ThinkPad X201] iwlwifi drops connection when using 802.11n Status in The Linux Kernel: New Status in “linux” package in Ubuntu: Incomplete Status in Fedora: Unknown Bug description: Symptoms: After a few minutes, the WiFi connection to my home router first becomes slow (packet loss), then entirely unusable. NetWork manager still shows the connection as up and working. dmesg shows messages like these: Aug 9 06:17:16 thinkpad kernel: [ 5026.531127] iwlwifi 0000:02:00.0: Tx aggrega tion enabled on ra = b0:48:7a:d6:91:50 tid = 6 WORKAROUND: rfkill to disable and enable WiFi, or add: options iwlwifi 11n_disable=1 to /etc/modprobe.d/iwlwifi.conf However, this means that all my network connections will only run in 802.11a/g mode, which is undesirably slow. Other people using MacOS in my place don't observe any issues, so I can rule out the router(s) as the culprits. Hardware: 02:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) Routers: TP-Link WR1043ND, WR2543ND using OpenWRT trunk. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-27-generic 3.2.0-27.43 ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21 Uname: Linux 3.2.0-27-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu12 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC29: alex 2261 F.... xfce4-volumed /dev/snd/controlC0: alex 2250 F.... pulseaudio alex 2261 F.... xfce4-volumed CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf2520000 irq 44' Mixer name : 'Intel IbexPeak HDMI' Components : 'HDA:14f15069,17aa2155,00100302 HDA:80862804,17aa21b5,00100000' Controls : 14 Simple ctrls : 6 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6QHT33WW-1.14' Mixer name : 'ThinkPad EC 6QHT33WW-1.14' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Thu Aug 9 12:24:19 2012 HibernationDevice: RESUME=UUID=9fee4cfb-53b9-43d7-8425-1666aff145c4 InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: LENOVO 3626A14 ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-27-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-27-generic N/A linux-backports-modules-3.2.0-27-generic N/A linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/26/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 6QET69WW (1.39 ) dmi.board.name: 3626A14 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6QET69WW(1.39):bd04/26/2012:svnLENOVO:pn3626A14:pvrThinkPadX201:rvnLENOVO:rn3626A14:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 3626A14 dmi.product.version: ThinkPad X201 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1034740/+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
