[benibela]

>4) Selecting the Nvidia graphics disabled on-board audio. I had to either use USB or Bluetooth. I never figured this out despite countless hours of messing around with alsamixer. My best guess is that it was trying to direct everything over the HDMI out even though that wasn't plugged in. The Intel drivers were loaded, just every time I selected the Nvidia chip, the audio devices would disappear.

Try sudo alsactl restore

I have a Dell G5 with Nvidia RTX and my headphones do not work when I start it

Took me a few months of investigation, but that alsactl command fixes it in 90% of situations