No recognition of built-in microphone/speakers with Ubuntu 20.10, "dummy output" only. Works with HDMI though

I'm a fairly novice linux user but I've been researching this problem for a while now and have tried multiple claimed fixes, but nothing will restore my ability to use my built-in microphone or internal speakers with my laptop.

When I go into "Settings > Sound", all I get is "Dummy Output", unless I plug something into the Mini Displayport, which it will recognize and send sound to. Plugging headphones into the headphone jack does nothing. Here's some of the fixes I've tried and some commands and responses to better explain what I'm working with.

1. Force-reloading alsa and pulseaudio several times as well as reinstalling them:

    sudo apt-get install --reinstall alsa-base pulseaudio
    sudo alsa force-reload
    sudo pulseaudio -k
    sudo pulseaudio -D
   

2. Using alsamixer, which does not show what it should:
   alsamixer shows
   

   and upon hitting F6 reveals only one soundcard titled "HDA Intel PCH" in slot 0. It does not show any level bars or anything I've seen from other pictures of alsamixer

3. Editing /etc/modprobe.d/alsa-base.conf to include options:

    sudo nano /etc/modprobe.d/alsa-base.conf
   

   and adding

    options snd-hda-intel model="..."
   

   with ... being either "generic" or "auto"

4. Creating an asound.conf file in /etc/:

    cd /etc/
    touch asound.conf
    sudo nano asound.conf
   

   and entering

    defaults.pcm.card 0
    defaults.pcm.device 0
    defaults.ctl.card 0
   

Here are the outputs from several commands I've tried to better show what my hardware is like

inxi -SMA returns THIS
lsmod | grep snd returns THIS
aplay -l returns THIS
lspci -nnk | grep -A2 Audio returns THIS

Hopefully between all of this it's easier to decipher what I have and what hasn't worked so far. Any and all help is appreciated.