X86 Hardware issues (Graphics, WiFi, Onboard Sound, external DACs, Disks, BIOS/UEFI Boot problems etc.)

volumio 3.569 installed on x86 box (dell wyse 5010) does not shut down.
not in the web ui or in terminal sudo shutdown -h now is working.
it stops at “target reached power-off” and the computer stucks there (only can be turned of with pushing power button 10 secs).

during shutdown there is also an annoying conflict with a stop job running for closing smb shares (1min30sec), which seems to be because wifi is already shut down when volumio tries to unmount smb.

this has nothing to do with the shutdown problem, which persists even when I unmount smb in terminal before sudo shutdown -h now.

any advice is apreciated i am dealing with this now for three days and can get it fixed.

Sorry for my bad english
thanks in advance
Peer