No Wi-Fi Adapter Found in Ubuntu 18.04

I have installed Ubuntu 18.04 and when I click on settings and click on WiFi, it says No Wi-Fi Adapter Found.

I have a Windows 10 computer that is connected to the Internet. Is there a way to download WiFi drivers for Ubuntu on the Windows 10 computer, if missing drivers is the problem, and put them on a USB drive and install them that way?

If so can you give instructions?

Solution 1:

Here are the instructions on how to install the Realtek wireless drivers (my wireless card is Realtek rtl8723de). It should work the same if you have to git link for other wireless card drivers for Ubuntu or the instructions should be very similar.

How to get rtl8723de drivers and install

Note before you start: You need to find your wireless card or external wireless card (usb dongles model). Then you need to go to this website https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupportedand to find out if your wireless card or wireless usb dongle is supported. If it is not listed, then you need to type it into google.com and search for the type of card or dongle that you have to try to find the git link. Find the git link and click on it to find out how to install it with the terminal by typing commands similar to below.

For this card you can follow these instructions below.

Somewhere within the instructions below, it is going to ask you to enter a secure boot password and you need to type one in there. When you type reboot and the computer reboots, you will see a menu that asks you if you want to type the mok password. Select the option that says mok at the end (I don't remember what it says exactly, but you need to choose that option). It will then say to enter the password; enter the password you chose, hit Enter, and then choose reboot from the options menu.

Once you login, at the top right of the Ubuntu screen, click the down arrow and select WiFi. Choose the network you want to connect to, enter your WiFi password, and it should allow you to connect to your network.

To install, you have to type these instructions in a terminal window. Open a terminal by clicking the small square boxes at the left bottom of your screen, and in search, type terminal. Then enter these command:

sudo apt install git
git clone https://github.com/smlinux/rtl8723de.git -b 5.0-up
sudo apt-get install dkms
sudo dkms add ./rtl8723de
sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414
sudo depmod -a

Then reboot.

I will post a link to my website and a youtube video when I am finished completing a blog on this and a video.

These instructions should also work for No Wi-Fi Adapter Found In 19.04 (please correct me if I am wrong).