Step-by-step – Ubuntu 21.04 Realtek Rtl8821ce Driver Installation

Installing

2. 2. Downloading Realtek rtl8821CE Driver

   Download Realtek Driver for Ubuntu GNU/Linux

   Get Realtek Wi-fi Driver for Ubuntu

   Realtek Driver Source Realtek for Ubuntu

   If you are using Firefox then on Prompt Choose “Open with Archive Manager”:

   

   Or After try to Select the Package by the Downloads Button on Top Panel:

   

   Instead, on Google-Chrome simply try to Choose the Package on the Bottom Panel:

   

   How to Install Chrome Browser on Linux

3. 3. Extracting Realtek rtl8821CE Driver

   And then Extract Driver Archive into /tmp
   Possibly Double-Click/Right-Click on Package and Open with Archive Manager:
   
   Or from Command Line:

   unzip -d /tmp/ ~/Downloads/*master.zip

   (But if you are in Trouble to Find the Location on Terminal then See: How to Access Downloads Folder from Browser.)

4. 4. Removing Apt Driver

   First, to Remove rtl8821CE DKMS Apt Driver
   This only if it was installed, in any case try:

   sudo apt remove --purge rtl8821ce-dkms

   And if yes then reboot with:

   sudo reboot

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.

5. 5. Installing Dependencies

   Then to Install Required Stuff
   First, play:

   sudo apt install bc git module-assistant dkms

   Now better to Upgrade the System with:

   sudo apt upgrade

   And in this case after Restart your System running:

   sudo reboot

   Last, to Setup the Kernel Headers and other eventual Requirements run:

   sudo m-a prepare

6. 6. Installing Realtek rtl8821CE Driver

   Now to Install Wi-fi Driver for Ubuntu
   Access the Target folder, in case of a Git Checkout modifies the Path accordingly:

   cd /tmp/*master

   Or whatever else the Git Archive location.
   And then to Setup it play:

   sudo ./dkms-install.sh

   Last, in case of Troubles with Dkms you may Try with an Ordinary “make” “sudo make install” Setup.

7. 7. Loading Realtek rtl8821CE Driver

   Now to Load Realtek Driver into Ubuntu’s Kernel
   Try to Load it with the following Command:

   sudo modprobe 8821ce

   Possibly try to Reboot to Activate your Device:

   sudo reboot