Zotac zBox HD-ID11

After trying to get hdmi to work for the last 30 minutes, you can do the following

Change it to the deafult card you can update /usr/share/alsa/alsa.conf and change these lines:

defaults.ctl.card 0  
defaults.pcm.card 0  
defaults.pcm.device 0

to this:

defaults.ctl.card NVidia  
defaults.pcm.card Nvidia  
defaults.pcm.device 7

Once the machine reboot check that the configs are correct in gnome mixer and it should just work.