I think it's commit db5cce1afc8d ("Revert "iwlwifi: assign directly to iwl_trans->cfg in QuZ detection"") introduced in bug 1860816.
@kth, please try install backport-iwlwifi-dkms from Focal: https://packages.ubuntu.com/focal/backport-iwlwifi-dkms ** Summary changed: - After the upgrade of 19.10 on 2020-02-18, wifi does not exist + Intel Wireless-AC 9462 [8086:02f0] Subsystem [8086:42a4]: After the upgrade of 19.10 on 2020-02-18, wifi does not exist -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864188 Title: Intel Wireless-AC 9462 [8086:02f0] Subsystem [8086:42a4]: After the upgrade of 19.10 on 2020-02-18, wifi does not exist To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1864188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs