opi pc arm 5.10 ALSA no output from speakers but output only available through hdmi.
when installed pulse audio able get and change audio hdmi to analog but when switched to HDMI playback hangs and freezes.
If you mean the AV port, you need to unmute:
amixer set -c 0 'Audio lineout' unmute
Then test it by
speaker-test -twav -c2 -Dhw:0
(need to sudo if your user isn't member of audio group)