The wireless adapter cannot be found after installing Linux (Linux installs realtek8852BE driver)

Notebook model: thinkbook 16+

System: unbutu 20.04

Kernel version: 5.13

Wireless network card: realtek 8852BE

question:

After installing the Ubuntu system, there is no WIFI icon in the upper right corner, and the WIFI interface shows that no wireless adapter is found

Tried some methods on the forum to no avail. After investigation, it was found that Linux does not have the driver of realtek 8852BE (this wireless network card is relatively new)

Solution:

1. First enter the BIOS to close the secure boot

2. Download the 8852BE driver from github (thanks to the GitHub author for uploading)

git clone https://github.com/HRex39/rtl8852be.git

If you can’t download it using git, you can open the web page to download the compressed package in zip format and decompress it

3. Enter the downloaded driver folder

make -j8
sudo make install

4. Turn on the driver

sudo modprobe 8852be

Supplement: Kernel version 5.15 and above need to be patched, refer to the issue on GitHub