No Bluetooth Found - even if laptop has inbuild bluetooth

Question

I have HP Envy 15-j171nr Laptop. I have installed Ubuntu 18.04.3 LTS and it auto installed most of the driver except the Bluetooth. From the hp site I can only discovered that it has Broadcom Bluetooth driver I don't know what's the issue here. I tried googling but there is some solution that is beyond my understanding.

I have tried this though it won't do anything major:

sudo service bluetooth start

EDIT:

Here's the output for lspci -knn | grep Net -A3; lsusb

07:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]
Subsystem: Hewlett-Packard Company Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter [103c:18ec]
Kernel driver in use: rt2800pci
Kernel modules: rt2800pci
Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 04f2:b40d Chicony Electronics Co., Ltd 
Bus 002 Device 004: ID 138a:0050 Validity Sensors, Inc. Swipe Fingerprint Sensor
Bus 002 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Here's the output for sudo /etc/init.d/bluetooth status after sudo /etc/init.d/bluetooth start:

● bluetooth.service - Bluetooth service
   Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:bluetoothd(8)

Answer 1

sudo add-apt-repository ppa:blaze/rtbth-dkms

sudo apt update

sudo apt install rtbth-dkms

sudo vim /etc/rc.local

Add the command modprobe rtbth &> /dev/null right before "exit 0" and save.

sudo chmod 777 /etc/rc.local
sudo apt install blueman

Reboot.