Straight does play ATMOS. Receiver shows it and also if I mute floor speakers, I can hear sound coming from ceiling. Issue isn't with sound not coming. It has to do with how loud it comes.
I have an RX-A3040 and when I put it to STRAIGHT I 1005 definitely lose my overhead speakers - maybe my unit is faulty ??
I know the HDMI board is faulty as some inputs and one output doesn't work but I wouldn't think that would affect the sound modes in that way ?