Realtek Rtl8192fu Wireless Lan 80211n Usb 20 Network Adapter 2021 Guide

Blog Title: Taming the Realtek RTL8192FU: A 2021 Guide to the $10 Wi-Fi Adapter

Posted: March 15, 2021 Category: Linux/Hardware Reviews

If you’ve bought a cheap, no-name USB Wi-Fi dongle in the last year, chances are it contains the Realtek RTL8192FU chipset. Promising 150Mbps or 300Mbps speeds on the 2.4GHz band, these adapters look like a steal at under $10.

But here is the dirty secret: Out of the box, especially on Linux, they usually do not work. Blog Title: Taming the Realtek RTL8192FU: A 2021

I spent two days wrestling with this little green PCB so you don’t have to. Here is everything you need to know about the RTL8192FU in 2021.

The Fix (For Linux Users)

After trying five different GitHub repositories, only one worked consistently in 2021. Here is the manual fix for Ubuntu, Debian, or Raspberry Pi OS:

Step 1: Remove broken drivers

sudo dkms remove rtl8192fu --all

Step 2: Install dependencies

sudo apt update
sudo apt install dkms git raspberrypi-kernel-headers (or linux-headers-$(uname -r))

Step 3: The magic driver Clone the forked driver by user "kelebek333" (This is the only version patched for kernels up to 5.11):

git clone https://github.com/kelebek333/rtl8192fu
cd rtl8192fu
sudo ./dkms-install.sh

Step 4: Block the crappy kernel module You must blacklist the native driver so it doesn't interfere: Step 2: Install dependencies sudo apt update sudo

sudo sh -c 'echo "blacklist rtl8xxxu" >> /etc/modprobe.d/blacklist.conf'
sudo reboot

After reboot, your adapter should show up in NetworkManager.

Driver & Compatibility Notes (2021 Revision)

The 2021 revision improves upon earlier RTL8192 variants by:

⚠️ Verify the exact USB vendor/device ID (lsusb on Linux) before installing, as some vendors ship the same chip under different IDs. Step 3: The magic driver Clone the forked

Windows (7, 8.1, 10, 11)