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To install the module for the RTL8723DE chipset, first determine your kernel using uname -r if your kernel is lower than 4.11, do

sudo apt-get install build-essential dkms git
git clone -b 4.10-down https://github.com/jeremyb31/rtl8723de.git
sudo dkms add ./rtl8723de
sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414

Then reboot

If you have kernel 4.11 and newer do

sudo apt-get install build-essential dkms git
git clone https://github.com/jeremyb31/rtl8723de.git
sudo dkms add ./rtl8723de
sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414

Then reboot

If you wish to stop power management for the device and change the logging level to minimum

echo "options 8723de rtw_power_mgnt=0 rtw_drv_log_level=0" | sudo tee /etc/modprobe.d/8723de.conf

If you have UEFI, Secure Boot will need to be disabled for the module to load.


For ubuntu 18.04

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install -f

Clone the repository

git clone https://github.com/lwfinger/rtlwifi_new.git

Enter to the cloned folder

cd rtlwifi_new

Checkout to the extended branch

git checkout extended

Start installation

sudo make install
sudo modprobe -r rtl8723de
sudo modprobe rtl8723de
reboot

Remove DKMS Module

sudo dkms remove rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414 --all

Source:- https://ibcomputing.com/install-rtl8723de-realtek-d723-ubuntu-18-04/


Change ubuntu kernel

sudo apt-get -y install linux-image-4.8.0-58-generic linux-image-extra-4.8.0-58-generic
sudo apt-get update
sudo apt-get upgrade
sudo apt-get autoremove
sudo apt-get install -f
sudo apt-get install linux-headers-4.8.0-58-generic
reboot

restart to installed kernel

sudo apt-get install build-essential dkms git
git clone -b 4.10-down https://github.com/jeremyb31/rtl8723de.git
sudo dkms add ./rtl8723de
sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414

Remove older kernel

dpkg --list | grep linux-image
sudo apt-get purge linux-image-x.x.x-x-generic 
sudo update-grub2 
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