Mytek Stereo192 Not Connecting

[agent_kith]

Discovered my server is not in EFI mode by downloading and checking efibootmgr.  

EFI variables are not supported on this system.  

I'm thinking your statement of:
"...possibility the Mytek kernel will not boot properly on your setup if you installed Ubuntu in EFI mode (i.e. with CSM off)" means my system actually should boot properly with the Mytek kernel.  Now whether installing it in that mode is different than running it in that mode...I dunno, but I'll bet they are the same.

Ok.  Onward!

You have to use the mytec kernel then. Although it's an older kernel, it should boot up fine. and that has the mytec kernel compiled in, so in theory should work. If boot up fails, recover manually by changing the default kernel from the grub boot loader.