Unfortunately as the issue is intermittent, it is difficult to pinpoint a starting version exactly, but here's my best attempt:
Ubuntu zesty 4.10 series: definitely not affected Ubuntu artful 4.12 kernels: problem not observed, though other iwlwifi issues (bug 1719210) observed - probably not affected Ubuntu artful 4.13 kernels: 4.13.0-12.13 (current) definitely affected, unable to conclusively comment if earlier artful versions affected or not, due to already swapping kernels around a lot at the time troubleshooting the other mentioned bug. It's worth noting that there is a large change in the versions of the Intel iwlwifi firmware microcode loaded to the device between these mentioned kernel versions. Regrettably newer versions of the kernel have dropped support entirely for interacting with the known good microcode version, so it isn't possible to test changing the kernel and microcode versions independently. -- 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/1722109 Title: iwlwifi regression in artful - intermittent total packet loss Status in linux package in Ubuntu: Incomplete Bug description: Recently I have been experiencing intermitted total packet loss over wifi. I've already been looking at another issue in which Bluetooth coexistence seems to be causing controller hardware to crash - bug 1719210 - so I'm rather suspicious of the updated iwlwifi microcode that is used by newer kernel versions. Unfortunately, I don't have a good reproduction recipe, as the fault doesn't seem to occur immediately after boot, nor is it an absolute failure of connectivity - from a user perspective, it feels like, for example, the website you are using is responding exceptionally slowly. It is only on testing multiple remote sites, and finding that rebooting into an earlier kernel fixes the issue, that it is apparent that it's a local OS problem. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-12-generic 4.13.0-12.13 ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3 Uname: Linux 4.13.0-12-generic x86_64 ApportVersion: 2.20.7-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: maxb 1859 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sun Oct 8 19:10:31 2017 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=635db8ca-b352-4622-87eb-08f74460324b InstallationDate: Installed on 2016-08-16 (418 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: HP HP Spectre Notebook ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-12-generic root=UUID=4989886a-f95e-4802-ab51-dcbf53167aeb ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-12-generic N/A linux-backports-modules-4.13.0-12-generic N/A linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-08-31 (37 days ago) dmi.bios.date: 02/21/2017 dmi.bios.vendor: Insyde dmi.bios.version: F.31 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 81A0 dmi.board.vendor: HP dmi.board.version: 48.54 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.31:bd02/21/2017:svnHP:pnHPSpectreNotebook:pvrType1ProductConfigId:rvnHP:rn81A0:rvr48.54:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV G=N L=CON B=HP S=SPT dmi.product.name: HP Spectre Notebook dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+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
