Having run with just the 2.4MHz network for a while, something still isn't right. Every so often the network just stops talking. NetworkManger still thinks its connected, but no traffic seems to pass. It logs nothing when this happens (I'm guessing it gets detected, though, as that would explain the 2.4 <-> 5 switching I was seeing before)
I would suspect the router at this point, but another machine (with a different Intel chipset - lspci says Centrino Wireless-N 1030) never has any issues and, as mentioned originally, this only started after installing xenial, wily was fine. I'm out of ideas how how to try and debug this further. For reference I'm now using the 4.4.0-21-generic kernel. -- 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/1571535 Title: iwlwifi restarts randomly in xenial Status in linux package in Ubuntu: Incomplete Bug description: Recently installed xenial on a Lenovo Yoga 2-13 (Intel 7260 wifi card). On wily it worked perfectly, on xenial it regularly appears to restart the wifi connection (the end result is that I lose any vpn connections, as they don't seem to notice the restart, but that's another issue). In general use, I get periodic "wlp1s0: WPA: Group rekeying completed" messages in syslog (and used to get these in wily, too), but now, after a random amount of time (over the weekend it was several hours, this morning it was about 10 minutes, so it might be related to the amount of network traffic) I get "kernel: [13983.248157] wlp1s0: authenticate with 00:8a:ae:c9:9a:d8" (presumably my wifi router) and the usual wifi startup stuff including frequency lists, etc. It also always logs "systemd-udevd[30319]: Process '/sbin/crda' failed with exit code 249." every time (I'm not sure if this is relevant) After reading old, but similar bug reports, I've tried changing some of the module options: "11n_disable=1" and "11n_disable=8", but these had no effect. I've also tried the older firmware that wily used (/lib/firmware/iwlwifi-7260-13.ucode), but again, no improvement. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-18-generic 4.4.0-18.34 ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 7058 F.... pulseaudio /dev/snd/controlC1: chris 7058 F.... pulseaudio CurrentDesktop: Unity Date: Mon Apr 18 09:01:26 2016 HibernationDevice: RESUME=UUID=f92d915f-d552-4e5b-989d-70e936ce4f74 InstallationDate: Installed on 2016-04-14 (3 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323) MachineType: LENOVO 20344 ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-18-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro noprompt quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-18-generic N/A linux-backports-modules-4.4.0-18-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/09/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 96CN25WW(V1.11) dmi.board.asset.tag: 31900058WIN dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058WIN dmi.chassis.asset.tag: 31900058WIN dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga 2 13 dmi.modalias: dmi:bvnLENOVO:bvr96CN25WW(V1.11):bd07/09/2014:svnLENOVO:pn20344:pvrLenovoYoga213:rvnLENOVO:rnINVALID:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoYoga213: dmi.product.name: 20344 dmi.product.version: Lenovo Yoga 2 13 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1571535/+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
