On Sun, 26 Jul 2020 at 17:49, Samuel Sieb <samuel@sieb.net> wrote:

On 7/26/20 1:37 PM, Greg Woods wrote:
> After wrestling all day with an ASUS Xonar SE card (with accompanying
> Googling), I now believe that this card cannot be made to work in Linux.
> Stereo output through the green line out port works fine, but SPDIF does
> not. "lspci" actually claims this thing is a USB controller, although as
> I mentioned stereo sound does work.

Audio, bluetooth, and other I/O is often implemented using USB devices, so

it should not be surprising to find a USB controller. You should be able to find

the USB id's. According to ASUS (https://www.asus.com/Sound-Cards/Xonar-SE/specifications/),

the card uses a "C-Media USB2.0 6620A High-Definition Sound Processor (Max. 192KHz/24bit)".

https://www.audioshark.org/ might be able to help -- there are linux users doing

serious audio work.

George N. White III