How to Reinstall Sound Drivers?

Question

I'm having some sound issues, and I believe that reinstalling or resetting my sound drivers or sound settings may solve this issue. How can I do this? This is my list of playback devices from aplay -l

sarah@ConvergentRefuge:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 9: HDMI 3 [HDMI 3] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 10: HDMI 4 [HDMI 4] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 0: 92HD91BXX Analog [92HD91BXX Analog] Subdevices: 1/1 Subdevice #0: subdevice #0

EDIT 0: I tried https://askubuntu.com/a/8773/645874 but no luck. (This includes restarting the system, and not simply logging off)

Solution

Try this ( Open terminal: Ctrl + Alt + T):

1. Install pavucontrol sudo apt-get install pavucontrol

2. Install PulseAudio

   2.1 sudo apt update

   2.2 sudo apt install pulseaudio

   2.3 Now reboot your computer.

   2.4 Check if PulseAudio was installed pulseaudio --version , terminal should output something similar to mine

pulseaudio 11.1

3. Start AudioPulse pulseaudio --start (this doesn't open the GUI)
4. Open the Volume Control GUI pavucontrol, this should start something similar to mine

and from here set to default audio input/out by checking that green checkmark