** Description changed: - Maybe related to - - https://bugzilla.redhat.com/show_bug.cgi?id=785239 - - 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. + 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 - Quick workaround is to use rfkill to disable and enable WiFi. Long-term - workaround is mentioned in bugzilla bug above, to put - + 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. - - Hardware: - - 02:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 - (rev 35) - + 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. - - Other people using MacOS in my place don't observe any issues, so I can - rule out the router(s) as the culprits. - - Alex 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 + **** 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 + 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 + 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 + 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] + 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 + 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 + 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
** Summary changed: - iwlwifi drops connection when using 802.11n + 8086:4238] iwlwifi drops connection when using 802.11n ** Summary changed: - 8086:4238] iwlwifi drops connection when using 802.11n + 8086:4238 iwlwifi drops connection when using 802.11n -- 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 iwlwifi drops connection when using 802.11n Status in The Linux Kernel: Confirmed Status in “linux” package in Ubuntu: Confirmed 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
