It's very hard to reproduce, unfortunately. Sometimes it happens number of times per day, sometimes it's a month without problems.
-- 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/1420243 Title: iwlwifi + intel 6205 + tp-link 4300: bandwidth changed = host unreachable Status in linux package in Ubuntu: Incomplete Bug description: when using the combo of Intel 6205N (IBM ThinkPad T430s) and TP-Link TL-WDR4300 router there is a problem of sudden loss of connectivity after a "bandwidth change" event is registered by wifi module. In log: Feb 10 13:09:28 lenovo kernel: [1981878.856612] wlan0: AP <redacted> changed bandwidth, new config is 2462 M Hz, width 1 (2462/0 MHz) Feb 10 13:09:31 lenovo kernel: [1981881.929193] wlan0: AP <redacted> changed bandwidth, new config is 2462 M Hz, width 2 (2452/0 MHz) After that point no frames are coming from the router. I.e. even ARP is not resolving, although the wifi connection seems to look fine in NetworkManager. Restarting networking or killing wpa_supplicant solves the problem for a while. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-extra-3.13.0-38-generic 3.13.0-38.65 ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13 Uname: Linux 3.13.0-45-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kit 2467 F.... pulseaudio CRDA: country IL: (2402 - 2482 @ 40), (N/A, 20) (5150 - 5250 @ 40), (N/A, 23), NO-OUTDOOR (5250 - 5350 @ 40), (N/A, 23), NO-OUTDOOR, DFS CurrentDesktop: Unity Date: Tue Feb 10 13:19:45 2015 HibernationDevice: RESUME=UUID=5719e2ac-f0f6-464f-99cf-f732c3ec9606 InstallationDate: Installed on 2014-01-28 (378 days ago) InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) MachineType: LENOVO 235389G ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-45-generic.efi.signed root=UUID=0c5e577c-b641-490c-ae43-f88b134fe24a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-45-generic N/A linux-backports-modules-3.13.0-45-generic N/A linux-firmware 1.127.11 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-09-07 (156 days ago) dmi.bios.date: 02/18/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G7ET92WW (2.52 ) dmi.board.asset.tag: Not Available dmi.board.name: 235389G dmi.board.vendor: LENOVO dmi.board.version: Win8 Pro DPK TPG dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG7ET92WW(2.52):bd02/18/2013:svnLENOVO:pn235389G:pvrThinkPadT430s:rvnLENOVO:rn235389G:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 235389G dmi.product.version: ThinkPad T430s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1420243/+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
