Problems:
a) No sound
b) Only onboard screen, does not recognise HDMI or Mini-DP
Solutions:
1) Install Korora
2) Make sure you're not using an outdated kernel that doesn't have the
snd-hda-intel driver available.
3) dnf install akmod-nvidia xorg-x11-drv-nvidia
Extra resources:
http://sub-pop.net/post/fedora-23-on-system76-oryx-pro/