I'm trying to setup a Soundblaster X-Fi to output 5.1 surround sound to a sound system. I've checked on the sound system itself that all 5.1 speakers work. When I go into the sound settings I see the X-FI sound card as an option and I can also choose everything between and including stereo and 5.1 surround sound. However when I choose 5.1 surround sound and try the speaker test only "left front" and "right front" produce sound and all the other speaker nothing.
There don't seem to be any error messages or anything so I'm not sure where to begin trying to get this working.
Any help would be appreciated.
~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.4 LTS Release: 18.04 Codename: bionic