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Ubuntu no wifi

How Installing Realtek wifi driver in ubuntu

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After dual-booting or Installing Ubuntu, It says that Ubuntu did not detect any wireless network. Networking was on but it said ‘no network devices available‘.

This method will install the newest Realtek rtlwifi codes (including rtl8192certl8192curtl8192sertl8192dertl8188eertl8192eertl8723aertl8723bertl8821aertl8822be and rtl8723de) in Ubuntu with DKMS (Dynamic Kernel Module Support) support. So it will definitely work in each kernel on your system.

How to dual boot Ubuntu & Windows 10. Read more…

No network devices available

Let’s FIX this

1. First you need to connect your laptop to a wired network, and then open terminal from application menu.

2. Then Run this command to install some required tools.

sudo apt install git build-essential dkms

Then it asks for the password. Type user password (no asterisk feedback due to security reason) when it prompts and hit Enter.

sudo apt install git build-essential dkms

3. Now grab the rtlwifi_new codes via command:

git clone -b extended https://github.com/lwfinger/rtlwifi_new.git
rtlwifi_new

4. Add the source to the tree for builds with DKMS support.

sudo dkms add ./rtlwifi_new

5. Finally install the drivers via command:

sudo dkms install rtlwifi-new/0.6
install rtlwifi

6. If everything is done, Wifi should work immediately.

If not, try commands to load the new installed module (rtl8723de in the case):

sudo modprobe -r rtl8723de && sudo modprobe rtl8723de

7. And Wifi works after reboot without doing any configuration, at least in my case in Ubuntu 19.04.

If not, try command to write it into configuration file (replace 3 to 12 or 4 if signal is weak).

echo "options rtl8723de ant_sel=3" | sudo tee /etc/modprobe.d/rtl8723de.conf

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