apport information ** Attachment added: "WifiSyslog.txt" https://bugs.launchpad.net/bugs/1887214/+attachment/5391596/+files/WifiSyslog.txt
-- 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/1887214 Title: [18.04 LTS] Somehow wifi network latency is too high (1000~3000 ms) Status in linux package in Ubuntu: Confirmed Bug description: [Problem description] Somehow wifi network latency is too high. (1000~3000 ms) DUT: - Product: Lenovo X1C6 - BIOS Information: Vendor: LENOVO Version: N23ET74W (1.49 ) Release Date: 06/03/2020 - Wifi information: Intel Wireless 8265 / 8275 driverversion=5.3.0-62-generic firmware=36.9f0a2d68.0 - OS: Ubuntu 18.04.4 LTS/Linux 5.3.0-62-generic/X86-64 [Test steps] 1. Boot up Ubuntu 18.04.4 LTS. 2. Open terminal. 3. To execute ping command, and target is in the local network. (For example: local gateway) 4. After few mins, I noticed that network latency will get worse. Sample output: 64 bytes from 192.168.1.1: icmp_seq=714 ttl=64 time=2.31 ms 64 bytes from 192.168.1.1: icmp_seq=715 ttl=64 time=1.61 ms 64 bytes from 192.168.1.1: icmp_seq=716 ttl=64 time=8.93 ms 64 bytes from 192.168.1.1: icmp_seq=717 ttl=64 time=59.0 ms 64 bytes from 192.168.1.1: icmp_seq=718 ttl=64 time=101 ms 64 bytes from 192.168.1.1: icmp_seq=719 ttl=64 time=155 ms 64 bytes from 192.168.1.1: icmp_seq=720 ttl=64 time=212 ms 64 bytes from 192.168.1.1: icmp_seq=721 ttl=64 time=347 ms 64 bytes from 192.168.1.1: icmp_seq=722 ttl=64 time=485 ms 64 bytes from 192.168.1.1: icmp_seq=723 ttl=64 time=663 ms 64 bytes from 192.168.1.1: icmp_seq=724 ttl=64 time=914 ms 64 bytes from 192.168.1.1: icmp_seq=725 ttl=64 time=1149 ms 64 bytes from 192.168.1.1: icmp_seq=726 ttl=64 time=1490 ms 64 bytes from 192.168.1.1: icmp_seq=727 ttl=64 time=1828 ms 64 bytes from 192.168.1.1: icmp_seq=728 ttl=64 time=2154 ms 64 bytes from 192.168.1.1: icmp_seq=729 ttl=64 time=2609 ms 64 bytes from 192.168.1.1: icmp_seq=730 ttl=64 time=2851 ms 64 bytes from 192.168.1.1: icmp_seq=731 ttl=64 time=2825 ms 64 bytes from 192.168.1.1: icmp_seq=732 ttl=64 time=2184 ms 64 bytes from 192.168.1.1: icmp_seq=733 ttl=64 time=2582 ms 64 bytes from 192.168.1.1: icmp_seq=734 ttl=64 time=1898 ms 64 bytes from 192.168.1.1: icmp_seq=735 ttl=64 time=1377 ms 5. Same machine when I switched to W10 then I didn't encounter this symptom. [Expected result] Wifi network latency should not over 2~3 ms at least. [Actual result] Wifi network latency is too high. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lawrence 2772 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-05-30 (772 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: LENOVO 20KGS0FV00 Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-62-generic root=UUID=65f0f796-b6da-4d46-98a5-325713eee95b ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 5.3.0-62.56~18.04.1-generic 5.3.18 RelatedPackageVersions: linux-restricted-modules-5.3.0-62-generic N/A linux-backports-modules-5.3.0-62-generic N/A linux-firmware 1.173.18 Tags: bionic Uname: Linux 5.3.0-62-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/03/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N23ET74W (1.49 ) dmi.board.asset.tag: Not Available dmi.board.name: 20KGS0FV00 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN23ET74W(1.49):bd06/03/2020:svnLENOVO:pn20KGS0FV00:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KGS0FV00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 6th dmi.product.name: 20KGS0FV00 dmi.product.sku: LENOVO_MT_20KG_BU_Think_FM_ThinkPad X1 Carbon 6th dmi.product.version: ThinkPad X1 Carbon 6th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887214/+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
