I used the following procedure

sudo apt install git
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new/
git checkout origin/extended -b extended
sudo apt-get install linux-headers-generic build-essential git
sudo make install
sudo modprobe -r rtl8723de
sudo modprobe rtl8723de

However when my system powered-off and rebooted the wifi does not work anymore.

I cannot run the above one more time since already rtlwifi_new directory is present and the above procedure errors with the following:

sudo modprobe rtl8723de modprobe: ERROR: could not insert 'rtl8723de': Exec format error

How can I fix this issue ? Please help.


I would do

cd ~/rtlwifi_new
make clean
sudo apt install dkms
sudo dkms add ./rtlwifi_new
sudo dkms install rtlwifi-new/0.6


You are likely seeing the Exec Format error because you are not doing a make clean and it is building for an older kernel

  • Thank you Jeremy. You are right after I did make clean, the Exec format error did not come. – Sreenivasa Hosamane Mar 10 '19 at 14:59
  • I have a question to you. Why when powered off, this wifi adapter installation is going away ? Did I miss anything in my previous step. – Sreenivasa Hosamane Mar 10 '19 at 15:02
  • In terminal, run long command wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info && cat wireless-info.txt | nc termbin.com 9999 Post URL – Jeremy31 Mar 10 '19 at 16:21

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.