Sound not working Focal Fossa Ubuntu 20.04

I have been using ubuntu 20.04 recently and have a HP pavillion laptop with B&O speakers. However i am not able to hear any sound. though, Bluetooth is working fine.

I have tried many solutions such as :

*sudo apt purge timidity-daemon

*sudo alsa force-reload

*sudo apt install pavucontrol and running pavucontrol.

None of the solutions have worked for me yet.

EDIT:Later I assumed it to be a kernel bug and say a solution using the following commands:

sudo add-apt-repository ppa:kaihengfeng/fix-lp1869819sudo apt-get update

after that i have tried reinstalling pulseaudio. And now bluetooth devices just after getting connected are automatically disconnected, do not play any sound either.