Home / ubuntu / Questions / 1047245
In Process
Dev
Asked: 2018-06-17 17:50:12 +0800 CST

WiFi adapter not found in Ubuntu 18.04 [duplicate]

  • 772

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?

wireless hp 18.04

1 Answers

  1. 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:

    cd rtlwifi_new

    Check out the extended branch:

    git checkout extended

    Start installation:

    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
    • 14