** Description changed: - I'm seeing symptoms similar to those described in #911059 and #948235. + 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 + **** 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 + 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 + 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 + 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] + 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 + 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 + 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
** Summary changed: - Another iwlwifi dropout issue + iwlwifi intermittently losing connectivity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/984552 Title: iwlwifi intermittently losing connectivity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/984552/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
