Ubuntu 20.04 No Wifi Adapter Found. Lenovo Ideapad Realtek

I bought a new Lenovo Ideapad 5 without any OS. I installed Ubuntu 20.04 on it. However, in Settings -> Wi-Fi I see "No Wi-Fi Adapter Found". I already spent hours trying to solve this problem. I don’t know, what I’m missing.

Here, I paste the output from some common commands I found.

sudo lshw -C network
  *-network UNCLAIMED       
       description: Network controller
       product: Realtek Semiconductor Co., Ltd.
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: ioport:2000(size=256) memory:d0500000-d05fffff
  *-network
       description: Ethernet interface
       physical id: 2
       bus info: usb@3:2
       logical name: usb0
       serial: 16:00:4c:38:bb:e6
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.59 link=yes multicast=yes

lspci -v | grep -i network
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8852

lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 0bda:4852 Realtek Semiconductor Corp. Bluetooth Radio
Bus 003 Device 002: ID 04f3:0c4d Elan Microelectronics Corp. ELAN:Fingerprint
Bus 003 Device 005: ID 22b8:2e24 Motorola PCS motorola one vision
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f2:b725 Chicony Electronics Co., Ltd Integrated Camera
Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Also, in Software & Updates -> Additional Drivers there is "No additional drivers available"

I have no idea, what to do next. Please, help.

>Solution :

To get the realtek 8852 PCI adapter working with Ubuntu, follow these steps:

  1. Download dependencies:

     sudo apt-get update
 sudo apt-get install make gcc linux-headers-$(uname -r) build-essential git

  2. Install ‘fix’:

    git clone https://github.com/lwfinger/rtw89.git -b v5
cd rtw89 && make && sudo make install

  3. load module:

    sudo modprobe rtw89pci

    If you are lucky, this is all you will need to do. The driver should be loaded. If not, you will likely know. The driver load attempt will have caused an error. If this is the case, click the source link below for details.

Source & src

Another Ubuntu user who used method with success (rtw89)

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