Linux HDMI no sound with HDA Intel ALC269VB
Digital Output (SPDIF) not working with HDA Intel ALC269VB
Open a terminal
sudo gedit /etc/modprobe.d/alsa-base.conf
Add this to the bottom of the file
options snd-hda-intel model=auto
REBOOT
Under Sound Preferences > Hardware > Profile will be Digital Stereo Duplex (IEC958) and selecting that option made the digital spdif output work for me.