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I suggest you update system BIOS to latest version 1.18 — Support for SF314-54 | Acer United States
If audio is still not working as expected with latest BIOS, use this command to force use of snd_hda_intel driver
sudo tee /etc/modprobe.d/inteldsp.conf <<< 'options snd-intel-dspcfg dsp_driver=1'
snd_hda_intel driver does not support internal digital microphone array, but should allow ALSA to detect onboard audio device for audio to speakers or headphones