Activity log for bug #984552

Date Who What changed Old value New value Message
2012-04-18 04:12:43 Matt Zimmerman bug added bug
2012-04-18 04:15:24 Matt Zimmerman description I'm seeing symptoms similar to those described in #911059 and #948235. I've tried going back through the past few kernels, and the problem is consistent from 3.2.0-19.30 through 3.2.0-23.36 (which seems to be current). I see no errors in dmesg or other indications of what's going wrong, but It's very easily reproducible, as it happens all the time. I lose connectivity about once every 30 seconds, for about 30 seconds, i.e. it's down 50% of the time. tutti:[~] ping -I wlan0 192.168.0.1 PING 192.168.0.1 (192.168.0.1) from 192.168.0.157 wlan0: 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_req=32 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=33 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=34 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=35 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=36 ttl=64 time=2.80 ms 64 bytes from 192.168.0.1: icmp_req=37 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=38 ttl=64 time=2.99 ms 64 bytes from 192.168.0.1: icmp_req=39 ttl=64 time=3.08 ms 64 bytes from 192.168.0.1: icmp_req=40 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=41 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=42 ttl=64 time=3.10 ms 64 bytes from 192.168.0.1: icmp_req=43 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=102 ttl=64 time=2.74 ms 64 bytes from 192.168.0.1: icmp_req=103 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=104 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=105 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=106 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=107 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=108 ttl=64 time=2.98 ms 64 bytes from 192.168.0.1: icmp_req=109 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=110 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=111 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=112 ttl=64 time=3.02 ms 64 bytes from 192.168.0.1: icmp_req=113 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=114 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=115 ttl=64 time=2.91 ms 64 bytes from 192.168.0.1: icmp_req=116 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=117 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=118 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=119 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=120 ttl=64 time=1.07 ms 64 bytes from 192.168.0.1: icmp_req=121 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=122 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=123 ttl=64 time=3.01 ms 64 bytes from 192.168.0.1: icmp_req=124 ttl=64 time=2.88 ms 64 bytes from 192.168.0.1: icmp_req=125 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=126 ttl=64 time=3.13 ms 64 bytes from 192.168.0.1: icmp_req=127 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=128 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=129 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=190 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=191 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=192 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=193 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=194 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=195 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=196 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=197 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=198 ttl=64 time=2.70 ms 64 bytes from 192.168.0.1: icmp_req=199 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=200 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=201 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=202 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=203 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=204 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=205 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=206 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=207 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=208 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=209 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=210 ttl=64 time=3.11 ms 64 bytes from 192.168.0.1: icmp_req=211 ttl=64 time=2.73 ms 64 bytes from 192.168.0.1: icmp_req=212 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=213 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=214 ttl=64 time=2.78 ms 64 bytes from 192.168.0.1: icmp_req=215 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=216 ttl=64 time=4.17 ms 64 bytes from 192.168.0.1: icmp_req=217 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=218 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=219 ttl=64 time=2.84 ms 64 bytes from 192.168.0.1: icmp_req=220 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=221 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=222 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=223 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=224 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=225 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=226 ttl=64 time=2.68 ms 64 bytes from 192.168.0.1: icmp_req=227 ttl=64 time=2.94 ms ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-23-generic 3.2.0-23.36 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu2 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mdz 2230 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000' Controls : 26 Simple ctrls : 8 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown' Mixer name : 'ThinkPad EC (unknown)' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off] Date: Tue Apr 17 21:06:56 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: LENOVO 4286CTO ProcEnviron: TERM=xterm LC_COLLATE=C PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=b4f82fbf-ca0b-4df1-86f6-2c4a94b99732 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-23-generic N/A linux-backports-modules-3.2.0-23-generic N/A linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-03-14 (34 days ago) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO 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:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO I'm seeing symptoms similar to those described in #911059 and #948235, but I'm not sure as they're not very specific. I'm seeing intermittent loss of connectivity, where there are no errors, the connection stays "up" but packets are no longer getting through. I've tried going back through the past few kernels, and the problem is consistent from 3.2.0-19.30 through 3.2.0-23.36 (which seems to be current). I see no errors in dmesg or other indications of what's going wrong, but It's very easily reproducible, as it happens all the time. I lose connectivity about once every 30 seconds, for about 30 seconds, i.e. it's down 50% of the time. tutti:[~] ping -I wlan0 192.168.0.1 PING 192.168.0.1 (192.168.0.1) from 192.168.0.157 wlan0: 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_req=32 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=33 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=34 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=35 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=36 ttl=64 time=2.80 ms 64 bytes from 192.168.0.1: icmp_req=37 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=38 ttl=64 time=2.99 ms 64 bytes from 192.168.0.1: icmp_req=39 ttl=64 time=3.08 ms 64 bytes from 192.168.0.1: icmp_req=40 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=41 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=42 ttl=64 time=3.10 ms 64 bytes from 192.168.0.1: icmp_req=43 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=102 ttl=64 time=2.74 ms 64 bytes from 192.168.0.1: icmp_req=103 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=104 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=105 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=106 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=107 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=108 ttl=64 time=2.98 ms 64 bytes from 192.168.0.1: icmp_req=109 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=110 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=111 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=112 ttl=64 time=3.02 ms 64 bytes from 192.168.0.1: icmp_req=113 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=114 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=115 ttl=64 time=2.91 ms 64 bytes from 192.168.0.1: icmp_req=116 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=117 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=118 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=119 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=120 ttl=64 time=1.07 ms 64 bytes from 192.168.0.1: icmp_req=121 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=122 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=123 ttl=64 time=3.01 ms 64 bytes from 192.168.0.1: icmp_req=124 ttl=64 time=2.88 ms 64 bytes from 192.168.0.1: icmp_req=125 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=126 ttl=64 time=3.13 ms 64 bytes from 192.168.0.1: icmp_req=127 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=128 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=129 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=190 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=191 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=192 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=193 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=194 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=195 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=196 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=197 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=198 ttl=64 time=2.70 ms 64 bytes from 192.168.0.1: icmp_req=199 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=200 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=201 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=202 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=203 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=204 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=205 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=206 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=207 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=208 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=209 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=210 ttl=64 time=3.11 ms 64 bytes from 192.168.0.1: icmp_req=211 ttl=64 time=2.73 ms 64 bytes from 192.168.0.1: icmp_req=212 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=213 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=214 ttl=64 time=2.78 ms 64 bytes from 192.168.0.1: icmp_req=215 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=216 ttl=64 time=4.17 ms 64 bytes from 192.168.0.1: icmp_req=217 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=218 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=219 ttl=64 time=2.84 ms 64 bytes from 192.168.0.1: icmp_req=220 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=221 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=222 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=223 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=224 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=225 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=226 ttl=64 time=2.68 ms 64 bytes from 192.168.0.1: icmp_req=227 ttl=64 time=2.94 ms ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-23-generic 3.2.0-23.36 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu2 Architecture: amd64 ArecordDevices:  **** List of CAPTURE Hardware Devices ****  card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]    Subdevices: 1/1    Subdevice #0: subdevice #0 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: mdz 2230 F.... pulseaudio Card0.Amixer.info:  Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52'    Mixer name : 'Intel CougarPoint HDMI'    Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000'    Controls : 26    Simple ctrls : 8 Card29.Amixer.info:  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'    Mixer name : 'ThinkPad EC (unknown)'    Components : ''    Controls : 1    Simple ctrls : 1 Card29.Amixer.values:  Simple mixer control 'Console',0    Capabilities: pswitch pswitch-joined penum    Playback channels: Mono    Mono: Playback [off] Date: Tue Apr 17 21:06:56 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: LENOVO 4286CTO ProcEnviron:  TERM=xterm  LC_COLLATE=C  PATH=(custom, user)  LANG=en_US.UTF-8  SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=b4f82fbf-ca0b-4df1-86f6-2c4a94b99732 ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.2.0-23-generic N/A  linux-backports-modules-3.2.0-23-generic N/A  linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-03-14 (34 days ago) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO 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:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO
2012-04-18 04:15:40 Matt Zimmerman summary Another iwlwifi dropout issue iwlwifi intermittently losing connectivity
2012-04-18 04:30:14 Brad Figg linux (Ubuntu): status New Confirmed
2012-04-18 11:08:07 penalvch description I'm seeing symptoms similar to those described in #911059 and #948235, but I'm not sure as they're not very specific. I'm seeing intermittent loss of connectivity, where there are no errors, the connection stays "up" but packets are no longer getting through. I've tried going back through the past few kernels, and the problem is consistent from 3.2.0-19.30 through 3.2.0-23.36 (which seems to be current). I see no errors in dmesg or other indications of what's going wrong, but It's very easily reproducible, as it happens all the time. I lose connectivity about once every 30 seconds, for about 30 seconds, i.e. it's down 50% of the time. tutti:[~] ping -I wlan0 192.168.0.1 PING 192.168.0.1 (192.168.0.1) from 192.168.0.157 wlan0: 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_req=32 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=33 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=34 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=35 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=36 ttl=64 time=2.80 ms 64 bytes from 192.168.0.1: icmp_req=37 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=38 ttl=64 time=2.99 ms 64 bytes from 192.168.0.1: icmp_req=39 ttl=64 time=3.08 ms 64 bytes from 192.168.0.1: icmp_req=40 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=41 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=42 ttl=64 time=3.10 ms 64 bytes from 192.168.0.1: icmp_req=43 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=102 ttl=64 time=2.74 ms 64 bytes from 192.168.0.1: icmp_req=103 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=104 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=105 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=106 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=107 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=108 ttl=64 time=2.98 ms 64 bytes from 192.168.0.1: icmp_req=109 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=110 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=111 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=112 ttl=64 time=3.02 ms 64 bytes from 192.168.0.1: icmp_req=113 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=114 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=115 ttl=64 time=2.91 ms 64 bytes from 192.168.0.1: icmp_req=116 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=117 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=118 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=119 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=120 ttl=64 time=1.07 ms 64 bytes from 192.168.0.1: icmp_req=121 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=122 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=123 ttl=64 time=3.01 ms 64 bytes from 192.168.0.1: icmp_req=124 ttl=64 time=2.88 ms 64 bytes from 192.168.0.1: icmp_req=125 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=126 ttl=64 time=3.13 ms 64 bytes from 192.168.0.1: icmp_req=127 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=128 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=129 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=190 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=191 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=192 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=193 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=194 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=195 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=196 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=197 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=198 ttl=64 time=2.70 ms 64 bytes from 192.168.0.1: icmp_req=199 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=200 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=201 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=202 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=203 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=204 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=205 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=206 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=207 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=208 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=209 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=210 ttl=64 time=3.11 ms 64 bytes from 192.168.0.1: icmp_req=211 ttl=64 time=2.73 ms 64 bytes from 192.168.0.1: icmp_req=212 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=213 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=214 ttl=64 time=2.78 ms 64 bytes from 192.168.0.1: icmp_req=215 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=216 ttl=64 time=4.17 ms 64 bytes from 192.168.0.1: icmp_req=217 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=218 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=219 ttl=64 time=2.84 ms 64 bytes from 192.168.0.1: icmp_req=220 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=221 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=222 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=223 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=224 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=225 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=226 ttl=64 time=2.68 ms 64 bytes from 192.168.0.1: icmp_req=227 ttl=64 time=2.94 ms ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-23-generic 3.2.0-23.36 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu2 Architecture: amd64 ArecordDevices:  **** List of CAPTURE Hardware Devices ****  card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]    Subdevices: 1/1    Subdevice #0: subdevice #0 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: mdz 2230 F.... pulseaudio Card0.Amixer.info:  Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52'    Mixer name : 'Intel CougarPoint HDMI'    Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000'    Controls : 26    Simple ctrls : 8 Card29.Amixer.info:  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'    Mixer name : 'ThinkPad EC (unknown)'    Components : ''    Controls : 1    Simple ctrls : 1 Card29.Amixer.values:  Simple mixer control 'Console',0    Capabilities: pswitch pswitch-joined penum    Playback channels: Mono    Mono: Playback [off] Date: Tue Apr 17 21:06:56 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: LENOVO 4286CTO ProcEnviron:  TERM=xterm  LC_COLLATE=C  PATH=(custom, user)  LANG=en_US.UTF-8  SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=b4f82fbf-ca0b-4df1-86f6-2c4a94b99732 ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.2.0-23-generic N/A  linux-backports-modules-3.2.0-23-generic N/A  linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-03-14 (34 days ago) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO 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:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO I'm seeing intermittent loss of connectivity, where there are no errors, the connection stays "up" but packets are no longer getting through. I've tried going back through the past few kernels, and the problem is consistent from 3.2.0-19.30 through 3.2.0-23.36 (which seems to be current). I see no errors in dmesg or other indications of what's going wrong, but It's very easily reproducible, as it happens all the time. I lose connectivity about once every 30 seconds, for about 30 seconds, i.e. it's down 50% of the time. tutti:[~] ping -I wlan0 192.168.0.1 PING 192.168.0.1 (192.168.0.1) from 192.168.0.157 wlan0: 56(84) bytes of data. 64 bytes from 192.168.0.1: icmp_req=32 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=33 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=34 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=35 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=36 ttl=64 time=2.80 ms 64 bytes from 192.168.0.1: icmp_req=37 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=38 ttl=64 time=2.99 ms 64 bytes from 192.168.0.1: icmp_req=39 ttl=64 time=3.08 ms 64 bytes from 192.168.0.1: icmp_req=40 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=41 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=42 ttl=64 time=3.10 ms 64 bytes from 192.168.0.1: icmp_req=43 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=102 ttl=64 time=2.74 ms 64 bytes from 192.168.0.1: icmp_req=103 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=104 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=105 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=106 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=107 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=108 ttl=64 time=2.98 ms 64 bytes from 192.168.0.1: icmp_req=109 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=110 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=111 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=112 ttl=64 time=3.02 ms 64 bytes from 192.168.0.1: icmp_req=113 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=114 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=115 ttl=64 time=2.91 ms 64 bytes from 192.168.0.1: icmp_req=116 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=117 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=118 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=119 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=120 ttl=64 time=1.07 ms 64 bytes from 192.168.0.1: icmp_req=121 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=122 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=123 ttl=64 time=3.01 ms 64 bytes from 192.168.0.1: icmp_req=124 ttl=64 time=2.88 ms 64 bytes from 192.168.0.1: icmp_req=125 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=126 ttl=64 time=3.13 ms 64 bytes from 192.168.0.1: icmp_req=127 ttl=64 time=2.75 ms 64 bytes from 192.168.0.1: icmp_req=128 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=129 ttl=64 time=2.97 ms 64 bytes from 192.168.0.1: icmp_req=190 ttl=64 time=2.96 ms 64 bytes from 192.168.0.1: icmp_req=191 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=192 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=193 ttl=64 time=2.95 ms 64 bytes from 192.168.0.1: icmp_req=194 ttl=64 time=2.93 ms 64 bytes from 192.168.0.1: icmp_req=195 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=196 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=197 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=198 ttl=64 time=2.70 ms 64 bytes from 192.168.0.1: icmp_req=199 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=200 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=201 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=202 ttl=64 time=2.85 ms 64 bytes from 192.168.0.1: icmp_req=203 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=204 ttl=64 time=2.82 ms 64 bytes from 192.168.0.1: icmp_req=205 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=206 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=207 ttl=64 time=3.05 ms 64 bytes from 192.168.0.1: icmp_req=208 ttl=64 time=2.87 ms 64 bytes from 192.168.0.1: icmp_req=209 ttl=64 time=2.79 ms 64 bytes from 192.168.0.1: icmp_req=210 ttl=64 time=3.11 ms 64 bytes from 192.168.0.1: icmp_req=211 ttl=64 time=2.73 ms 64 bytes from 192.168.0.1: icmp_req=212 ttl=64 time=2.76 ms 64 bytes from 192.168.0.1: icmp_req=213 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=214 ttl=64 time=2.78 ms 64 bytes from 192.168.0.1: icmp_req=215 ttl=64 time=2.83 ms 64 bytes from 192.168.0.1: icmp_req=216 ttl=64 time=4.17 ms 64 bytes from 192.168.0.1: icmp_req=217 ttl=64 time=2.64 ms 64 bytes from 192.168.0.1: icmp_req=218 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=219 ttl=64 time=2.84 ms 64 bytes from 192.168.0.1: icmp_req=220 ttl=64 time=2.89 ms 64 bytes from 192.168.0.1: icmp_req=221 ttl=64 time=2.92 ms 64 bytes from 192.168.0.1: icmp_req=222 ttl=64 time=2.86 ms 64 bytes from 192.168.0.1: icmp_req=223 ttl=64 time=2.77 ms 64 bytes from 192.168.0.1: icmp_req=224 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=225 ttl=64 time=2.90 ms 64 bytes from 192.168.0.1: icmp_req=226 ttl=64 time=2.68 ms 64 bytes from 192.168.0.1: icmp_req=227 ttl=64 time=2.94 ms ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-23-generic 3.2.0-23.36 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu2 Architecture: amd64 ArecordDevices:  **** List of CAPTURE Hardware Devices ****  card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]    Subdevices: 1/1    Subdevice #0: subdevice #0 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: mdz 2230 F.... pulseaudio Card0.Amixer.info:  Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52'    Mixer name : 'Intel CougarPoint HDMI'    Components : 'HDA:14f1506e,17aa21da,00100000 HDA:80862805,80860101,00100000'    Controls : 26    Simple ctrls : 8 Card29.Amixer.info:  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'    Mixer name : 'ThinkPad EC (unknown)'    Components : ''    Controls : 1    Simple ctrls : 1 Card29.Amixer.values:  Simple mixer control 'Console',0    Capabilities: pswitch pswitch-joined penum    Playback channels: Mono    Mono: Playback [off] Date: Tue Apr 17 21:06:56 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: LENOVO 4286CTO ProcEnviron:  TERM=xterm  LC_COLLATE=C  PATH=(custom, user)  LANG=en_US.UTF-8  SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=b4f82fbf-ca0b-4df1-86f6-2c4a94b99732 ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.2.0-23-generic N/A  linux-backports-modules-3.2.0-23-generic N/A  linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-03-14 (34 days ago) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 4286CTO 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:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4286CTO dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO
2012-04-18 11:08:20 penalvch tags amd64 apport-bug precise staging amd64 apport-bug needs-upstream-testing precise staging
2012-04-18 11:10:24 penalvch linux (Ubuntu): status Confirmed Incomplete
2012-04-18 13:40:43 Seth Forshee bug added subscriber Seth Forshee
2012-04-18 14:51:12 Joseph Salisbury linux (Ubuntu): importance Undecided Medium
2012-04-18 22:01:30 penalvch tags amd64 apport-bug needs-upstream-testing precise staging amd64 apport-bug bot-stop-nagging needs-upstream-testing precise staging
2012-04-19 15:44:23 Joseph Salisbury linux (Ubuntu): importance Medium High
2012-04-19 15:44:34 Joseph Salisbury tags amd64 apport-bug bot-stop-nagging needs-upstream-testing precise staging amd64 apport-bug bot-stop-nagging kernel-da-key needs-upstream-testing precise staging
2012-05-07 16:14:44 Pat McGowan bug added subscriber Pat McGowan
2012-05-08 09:08:21 Mark Foster bug watch added https://bugzilla.redhat.com/show_bug.cgi?id=805285
2012-05-08 09:08:21 Mark Foster bug watch added http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2359
2012-05-08 10:39:08 penalvch summary iwlwifi intermittently losing connectivity [8086:0085] iwlwifi intermittently losing connectivity
2012-05-11 10:52:23 Louis Bouchard bug added subscriber Louis Bouchard
2012-05-15 15:33:55 Smith bug added subscriber Karl
2012-05-18 20:20:44 Joseph Salisbury linux (Ubuntu): status Incomplete Confirmed
2012-05-19 16:20:19 karbon15 bug added subscriber karbon15
2012-05-20 16:33:33 Leif Halldor Asgeirsson bug added subscriber Leif Halldor Asgeirsson
2012-05-21 15:18:55 Joseph Salisbury linux (Ubuntu): status Confirmed Incomplete
2012-05-21 21:08:30 Eike Thaden bug added subscriber Eike Thaden
2012-05-23 20:32:37 Fernando Carolo bug added subscriber Fernando Carolo
2012-06-01 23:57:28 João Gomes bug added subscriber João Gomes
2012-06-08 09:25:25 Terry Stebbens bug added subscriber Terry Stebbens
2012-06-08 10:58:02 Terry Stebbens attachment added Output of ubuntu-bug for my new laptop (E6420) with Intel AGN5300 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/984552/+attachment/3180614/+files/984552.txt
2012-06-08 13:02:24 penalvch attachment removed Output of ubuntu-bug for my new laptop (E6420) with Intel AGN5300 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/984552/+attachment/3180614/+files/984552.txt
2012-06-14 21:46:22 Jakub Kałuża bug added subscriber Jakub Kałuża
2012-07-01 02:46:06 Mohammad Ziaul Haq bug added subscriber Mohammad Ziaul Haq
2012-07-04 18:07:49 Matt Zimmerman linux (Ubuntu): status Incomplete Fix Released
2012-07-25 01:04:38 Ben Gamari bug added subscriber Ben Gamari
2012-08-15 12:55:30 penalvch summary [8086:0085] iwlwifi intermittently losing connectivity [8086:0085] intermittently losing connectivity
2012-09-14 16:51:43 H.i.M bug added subscriber H.i.M
2012-09-26 15:32:55 Dominik Wujastyk bug added subscriber Dominik Wujastyk
2012-12-13 21:12:12 Kees bug added subscriber Kees
2013-02-16 14:51:42 Marcelo Fernandez bug added subscriber Marcelo Fernandez
2013-02-17 16:09:56 Simon Déziel bug added subscriber Simon Déziel
2013-02-17 16:10:39 Simon Déziel removed subscriber Simon Déziel
2013-02-17 16:10:48 Simon Déziel bug added subscriber Simon Déziel
2013-07-08 22:34:15 tanhnhi bug added subscriber tanhnhi
2013-09-27 14:52:44 Derek Dolney bug added subscriber Derek Dolney
2014-07-15 17:00:26 pippo bug added subscriber Claudio