Hello, are couple of days ago I started using a new computer. I am not able to get 5.1 functionality from my hardware (ASUS XONAR SE using S/PDIF out. ASUS Prime Z590M - Plus motherboard with Fedora WS 34. input to a Yamaha RX-V385 with S/PDIF).
When I check Settings > Sound I select (S/PDIF) XONAR. When I test the sound only front left and front right are shown. The center, and rear speakers are not shown.
Thanks for reading this.