>02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78) >firmware=36.77d01142.0
backport-iwlwifi-dkms was completly unstable (drop udp packet bigger than somes bytes ) After removing it worked but with slow speed .. Without backport-iwlwifi-dkms, wifi was slow on Focal until the last kernel update. With 5.4.0-31 I recover good performance with over 100Mbs. Before this kernel it was aroud 3-10Mbs/s If I remember well I think built-in wifi was slow since my upgrade to focal ( probably starting with 5.4.0-25) For Focal users , remove backport-iwlwifi-dkms and UPDATE your kernel There is 3 fix for iwlwifi in https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.31 and more pending to get into Focal maybe https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.33 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.36 I have play a lot with driver option to try to recover stability and performance before this kernel update .. I now use in /etc/modprobe.d/iwlwifi.conf: >options iwlwifi debug=1 swcrypto=1 disable_msix=1 disable_11ac=1 >disable_11ax=1 power_save=0 bt_coex_active=0 I will check later if I can revert some of this options to default value with 5.4.0-31 Good luck to all -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1869587 Title: WiFi performance is slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/backport-iwlwifi-dkms/+bug/1869587/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
