I am having this same problem with Xubuntu 20.04 kernel 5.4.0-60-generic As soon as I plug in the wifi adapter, all terminal commands hang, no programs open, and shutdown hangs.
Interface: wlxe84e06584470 Driver: mt76x2u lsusb: Bus 001 Device 004: ID 0e8d:7612 MediaTek Inc. 802.11ac WLAN dmesg: INFO: task kworker/u12:4:200 blocked for more than 120 seconds. Tainted: P OE 5.4.0-60-generic #67-Ubuntu Workqueue: phy0 ieee80211_iface_work [mac80211] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1724317 Title: Shutdown hangs / no standby - possible Wifi-bug in the kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1724317/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs