[alsa-devel] Sound Blaster Z - Sound from front case port, but not back

I am using a Sound Blaster Z on Debian. The back microphone port works as expected.

I can only manage to get audio out of the card by connecting the case audio header to the sound card, and then using the case front audio port and having the headphone port option enabled in alsamixer.

It is an inconvenience as now I have to use an extension cable to route things around (microphone cable at the back, audio cable to the front), having a headset.

Does anyone know a solution to this? How hard can it be to make the back audio part do the same thing as the front audio port?