** Attachment added: "Screenshot from 2020-07-11 14-08-53.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1887214/+attachment/5391581/+files/Screenshot%20from%202020-07-11%2014-08-53.png
** Description changed: [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 + 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. + 5. Same machine when I switched to W10 then I didn't encounter this + symptom. [Expected result] - Wifi network latency should not over 500 ms at least. + Wifi network latency should not over 10 ms at least. [Actual result] Wifi network latency is too high. ** Description changed: [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 10 ms at least. + Wifi network latency should not over 2~3 ms at least. [Actual result] Wifi network latency is too high. -- 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: New 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. 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
