I have a Raspberry Pi 4 running the snapshot.
I plugged in a USB wifi adapter and installed
rtl8812au-ct
4.19.101+2018-11-16-661268fd-2 = Driver for Realtek 8812 AU devices comfast 912-ac, etc
There is no error but the device is disabled.
Here's my dmesg output:
[195386.408647] usb 1-1.1: new high-speed USB device number 3 using xhci_hcd
[195386.539027] usb 1-1.1: New USB device found, idVendor=0bda, idProduct=8812, bcdDevice= 0.00
[195386.539038] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[195386.539046] usb 1-1.1: Product: 802.11n NIC
[195386.539053] usb 1-1.1: Manufacturer: Realtek
[195386.539059] usb 1-1.1: SerialNumber: 123456
[195497.093250] kmodloader: loading kernel modules from /etc/modules.d/*
[195497.135677] RTL871X: module init start
[195497.140055] RTL871X: rtl8812au v4.3.14_13455.20150212_BTCOEX20150128-51
[195497.147281] RTL871X: rtl8812au BT-Coex version = BTCOEX20150128-51
[195497.267202] RTL871X: rtw_ndev_init(wlan1)
[195497.273143] usbcore: registered new interface driver rtl8812au
[195497.273149] RTL871X: module init ret=0
[195497.278583] kmodloader: done loading kernel modules from /etc/modules.d/*
[195777.977828] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[196290.994306] RTL871X: rtw_ndev_uninit(wlan1)
That is a really old driver but it should error. 
It does scan sometimes but I had to remove it when when my wired internet stopped working. 
I lost my nlbw data too but I didn't see an error.
I found a newer driver but I haven't figured out how to cross compile it yet.
So maybe it is not so much debugging wireless until I get the new driver.
Anybody want to cross compile it for me?
uname -a
Linux OpenWrt 4.19.101 #0 SMP Thu Feb 13 20:35:13 2020 aarch64 GNU/Linux