I have recently installed Ubuntu 18.04 in my hp 15bs 145tu laptop. All packages of Ubuntu seem to be working properly but the WiFi adapter is not found, and I can't connect to the wireless network.
How can I debug/fix this?
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First, try to connect with the wired Internet connection (or you can use Mobile Tethering) and use the following commands to install missing Wi-Fi drivers.
Clone the repository (use your Terminal):
git clone https://github.com/lwfinger/rtlwifi_new.git
Enter the cloned folder:
Check out the extended branch:
git checkout extended
sudo make install sudo modprobe -r rtl8723de sudo modprobe rtl8723de
That's it! You have now successfully installed the RTL8723de Wi-Fi driver on your Ubuntu 18.04 system. This repo also contains the driver for RTL8723be and much more RealTek devices.
If that doesn't work just go and do this:
sudo apt purge bcmwl-kernel-source sudo sed -i '/blacklist bcma/ d' /etc/modprobe.d/blacklist.conf sudo sed -i '/blacklist brcmsmac/ d' /etc/modprobe.d/blacklist.conf
Reboot. If wifi does not come on, do:
sudo modprobe -v brcmsmac sudo modprobe -v bcma