Ubuntu - No audio from Steam games
 

I have Bioshock Infinite downloaded from Steam and running right now. I've noticed that there is currently no audio. Now, audio works in other things like watching Youtube videos. I also saw that there is audio when I tested it quickly in Minecraft. I'm not sure if this is a problem with the Steam games.

Can you run bothe games as an administrator?

If you can get to the pulse audio volume control when the games are open then that might be worth a look -- perhaps their audio is being sent through HDMI or being muted, for some reason.