Help with Wifi Adapter

[connoleg]

Hi all,
I am trying to get a USB wifi adapter working on a pi4 with PiCore 13.1. I switched off the inbuilt wifi on the Pi as need to use an adapter with an external aerial.

Running dmesg I get the following:

[    1.663266] usb 1-1.3: new high-speed USB device number 3 using xhci_hcd
[    1.763767] usb 1-1.3: New USB device found, idVendor=0bda, idProduct=c811, bcdDevice= 2.00
[    1.763773] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    1.763779] usb 1-1.3: Product: 802.11ac NIC
[    1.763784] usb 1-1.3: Manufacturer: Realtek
[    1.763788] usb 1-1.3: SerialNumber: 123456

Does this mean that the device has been recognised and is ready to use?

 

[curaga]

It means the device was recognized, but only at the USB level, you don't have a driver for it installed.

[Paul_123]

Realtek driver support is very limited in kernel.   Your specific device is a RTL8822cu base product, which is definitely not in the kernel sources.   You will have to build the driver yourself.....but since piCore does not have a dkms system, its a bit complicated.

Your best bet is to use a product with support in the kernel.   Here is some interesting information with regards to modern devices. 

https://github.com/morrownr/USB-WiFi

[connoleg]

Thanks guys, understood. Ill look for a different adapter from that resource

Gary