I use Ubuntu 16.04 and I'm hooking up my flatscreen ATVIO ATV-32 to my laptop. My video works fine but my audio doesn't. How can I get my audio working? I'm using an HDMI high speed cable. Thanks.
In xfce standard install there is no sound in settings. The only place to manually change the output from internal speakers is in the pulse audio mixer settings. Open pulse mixer click configuration and change profile to Digital Stereo (HDMI). It must be manually changed back if you want to use internal speakers again.