no sound on high sierra guest

[incheye]

tried all the audio settings,no joy... bit of newb to virtual box

host is el capitan vm is high sierra

logs attached

appreciate any help

[socratis]

tried all the audio settings,no joy... bit of newb to virtual box

Well, if you're new, you shouldn't be changing the settings randomly, you never know what reaction your actions will have. For example:

00:00:01.779588 [/Devices/hda/0/LUN#0/AttachedDriver/] (level 5)
00:00:01.779589   Driver <string>  = "NullAudio" (cb=10)

Do you know what "Null" is? Can you guess? Look it up, and then change back the setting to its default "CoreAudio".