The networking icon only has options for wired, and is missing a wireless option. The rtl8812au-dkms driver is identified by the AppCentre. I've tried multiple troubleshooting tips from other similar scenarios, but had no luck so far. The usb wifi stick works perfectly fine when elementary is running from a live usb, but as soon as the OS is installed it stops working. I have secure boot off in my bios.
Below are some commands and their outputs which I hope will help in diagnosing this issue.
Bus 001 Device 010: ID 0bda:8812 Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter
dkms status rtl8812au:
rtl8812au, 126.96.36.19975.20140902+dfsg, 4.15.0-65-generic, x86_64: installed rtl8812au, 188.8.131.5275.20140902+dfsg, 4.15.0-69-generic, x86_64: installed
lo no wireless extensions. enp0s31f6 no wireless extensions.
rfkill list all:
0: hci0: Bluetooth Soft blocked: no Hard blocked: no
So if my (limited) understanding is correct, the usb stick is detected fine and the drivers are installed, but the networking capabilities aren't available? I'm happy to edit with any more outputs that would be helpful.