Step-by-step – Linux Mint 18 Realtek RTL8723de Driver Installation

Setting Up

2. 2. Installing Dependencies

   Then to Install Required Packages
   Simply play:

   sudo apt install linux-headers-generic build-essential dkms git

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

3. 3. Downloading Realtek RTL8723de Driver

   Download Realtek RTL8723de Driver in Mint GNU/Linux

   Realtek RTL8723de Driver Archive

   Downloading Realtek RTL8723de Driver in Linux Mint

   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 Mint
   Possibly, to Install Unzip and Extract it on Command Line Play:

   sudo apt install unzip

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

4. 4. Installing Realtek RTL8723de Driver

   Then to Set up Realtek RTL8723de Wifi Driver
   First, Access the Target folder:

   cd /tmp/rtlwifi_new

   Now to Add it:

   sudo dkms add ../rtlwifi_new

   Again Build it:

   sudo dkms build rtlwifi-new/0.6

   And Install it into Dkms with:

   sudo dkms install rtlwifi-new/0.6

5. 5. Fixing Driver

   This may be Required only on Laptops
   First, to Test the Receiver’s Signal Level:

   sudo su -c "iwconfig wlan0"

   

   And if it’s Below 60 then to Fix it do:

   sudo /bin/sh -c 'echo "options RTL8723de ant_sel=2" >> /etc/modprobe.d/rtl8723de.conf'

6. 6. Disabling Secure Boot

   Finally, Reboot Disabling Secure Boot
   Execute:

   sudo reboot

   On Startup Enter BIOS Disabling Secure Boot.
   How to Enter BIOS on PC/Laptops

   Accessing BIOS Commands

   Entering BIOS Commands

   Possibly to Load it Manually run:

   sudo modprobe -v RTL8723de

   Or on a Laptop with Fixed Setup:

   sudo modprobe -v RTL8723de ant_sel=2

Thanks to Lwfinger precious Work!

So Now I’m truly Happy if My Guide could Help you to Install Realtek RTL8723de Driver on Linux Mint!