Alsa not recognise my ALC650

[fedoracorebeast]

Alsa reckons my motherboard has an alc658 chipset when it has an ALC650. But I dont get sound out of my rear speakers centre or sub. Also I have found if i plug the anlogue jack for the sub in the right channel i get the sub working. I have consulted my manual and it has said that my speakers are connected correctly

[fedoracorebeast]

I may try the drivers from realtek but I dont expect they would solve this problem cos they are alsa drivers too but older version. So how do I uninstall alsa on FC3