This tutorial will help you to connect Bluetooth on Dell-insperion-3521, This tutorial will work for all Bluetooth devices with model no. BCM43142A0-0a5c-21d7
We assume your Bluetooth device was not recognized by Ubuntu 20.04 :
Device Model- Dell-Inspiron-3521
Bluetooth hardware- 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0 (to get the name of Bluetooth hardware run lsusb
in terminal.)
Ubuntu version: 19.10
Tested on kernel version: 5.4.0-21-generic (to get the version of current kernel uname -r
in terminal.)
Steps to make Ubuntu recognize your Bluetooth device:
- Download the drivers from here – Download Broadcom 0a5c:21d7 Bluetooth Drivers for Ubuntu.
- Go to the download folder where you downloaded drivers and in terminal issue the command below :
sudo cp ~/Downloads/BCM43142A0-0a5c-21d7.hcd /lib/firmware/brcm/BCM43142A0-0a5c-21d7.hcd
- After copying the drivers :
sudo modprobe -r btusb
- At last
sudo modprobe btusb
- Now turn on the Bluetooth and in Bluetooth settings add a new device
Toggle Bluetooth on and off and it will start working as expected.