Should be a duplicate of bug 1865962, which was currently only fixed in 5.4.0-18 or newer in Focal. Is it possible for you to try Focal kernel?
$ echo deb http://archive.ubuntu.com/ubuntu/ focal | \ sudo tee /etc/apt/sources.list.d/focal.list $ sudo apt update && sudo apt install linux-modules-extra-5.4.0-21-generic/focal -- 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/1863769 Title: Ubuntu 18.04: Intel(R) Wireless-AC 9560 [8086:02f0] subsystem [8086:0034] Wifi adapter not detected after kernel update Status in linux package in Ubuntu: Incomplete Bug description: "lsb_release -rd" output: Description: Ubuntu 18.04.4 LTS Release: 18.04 So, my linux kernel was updated to 5.3.0-40 today, and my wifi adapter is no longer functional. When I run "lshw", the usb-1 device is detected, but is "UNCLAIMED". Booting with the previous kernel works, so I figured it's a kernel problem. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863769/+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
