I did as specified in this post and got the hdmi audio working. Though it only worked after I set the hdmi output to i2c in the alsamixer.
I could reinstall pulseaudio after that without problem.
BUT the analog audio sitll not working (by analog audio I mean the aundio on the AV jack, the one that cames along with the analog video signal).
I allready tried every possible combination on the alsamixer but to no avail.
I really need to that working because I want to use the box with an old analog TV.
My box is an X92 (S912) [2Gb RAM].
The image I'm currently running is Armbian_20.05.0_Arm-64_focal_current_5.6.0-rc4_desktop_20200306.img.
Any idea what else can I try?
