eOS Juno - HP PAVILION 15 - No WiFi after installation

Question

I just switched from windows to elementary OS Juno.

My Ethernet works perfectly. I only have issue with the Wifi, I've been trying a bunch of drivers and no success yet. I ran the following commands:

iwconfig shows:

lo no wireless extensions.
eno1 no wireless extensions.

inxi -nx shows:

Network: Card-1: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
           port: 4000
         bus-ID: 02:00.0
             IF: N/A
          state: N/A
            mac: N/A
         Card-2: Realtek RTL8111/8168/8411 PCIE Gigabit Ethernet Controller
         driver: r8169
              v: 2.3LK-NAPI
           port: 3000
         bus-ID: 03:00.0
             IF: eno1
          state: 

The laptop brand and model is: HP PAVILION 15-cs0022cl

Thanks in advance

Answer 1

This answer is very, very late but, for anyone who is still struggling with the RTL8821CE and using a Linux kernel older than 5.4, you can do this:

1. Reboot the machine and enter the UEFI/BIOS
2. Disable "Secure Boot"
3. Boot into Elementary

Once eOS is loaded:

0. Open Terminal
1. Disable validation on mokutil:

   sudo mokutil --disable-validation
   

2. Grab the Generic HWE kernel:

   sudo apt install linux-generic-hwe-18.04
   sudo apt update && sudo apt upgrade -y
   

3. Reinstalled the dkms headers:

   sudo apt-get install --reinstall git dkms build-essential linux-headers-$(uname -r)
   

4. Clone tomaspinho's GitHub repo for the RTL8821CE:

   git clone https://github.com/tomaspinho/rtl8821ce
   

5. Change to the new directory and update some file permissions:

   cd rtl8821ce
   chmod +x dkms-install.sh
   chmod +x dkms-remove.sh
   

6. Compile the driver:

   make
   sudo make install
   

7. Install the driver:

   sudo ./dkms-install.sh
   

8. Reboot

Once this is done, you will have a fully operational wireless network adapter.

Alternatively, installing eOS6 will have support right out of the box 👍🏻