No Mac HDMI Sound Output

[BlinksTale]

Not sure why, but using a display port to HDMI adapter on my 13" Mid 2012 MacBook with Bioshock Infinite reverts my audio back to my laptop, even though in my Apple (10.8) audio settings, it is set to HDMI. When Steam Big Picture mode is running, all audio plays through the TV/HDMI/etc, and Chrome has no trouble here, but Bioshock Infinite does. I have never seen this problem before, and could not change any settings in Bioshock Infinite. Thoughts? Advice? I would love to use my speakers.

EDIT: To clarify, Big Picture does not change any audio, it is just an example of something (its ambient sounds) that correctly play through HDMI, like watching a video in Chrome.

EDIT2: Fix found, see first comment.

[BlinksTale]

Oh fantastic, I already found a fix for it. This issue is caused by changing the display *after* the game has started in fullscreen. The cause was that, due to the launcher, I had to click "Start" with a mouse rather than my gamepad, and after the game was booted then I would close my laptop. This changed the (extended view) display to a single view, and the audio was reset in the process.

The fix: either don't change the display (so in my case, don't close the laptop) or if you do, have it happen before the game goes fullscreen (so in my case, rapidly closing the laptop after clicking play but before it could launch fullscreen).

If the launcher was controller based, or supported a gamepad/XInput like Big Picture mode did, all of this would work. Instead, my view changes when I have to switch between mouse and gamepad.

Hope this helps someone!

[chrisfried]

Wow. I was already annoyed that I needed a mouse to get past that launcher, now I find it is the indirect cause of my audio woes... Boo, Aspyre. Boo.