Linux Fullscreen Crash and No Sound

I'm using Ubuntu 14.10. I have a laptop that is connected to a monitor. The laptop lid is closed and I use the monitor with an external mouse and keyboard. The laptop screen is off. Whenever I try to play the game in fullscreen, it switches to only use the laptop screen, and turns the monitor off.

Similar to this problem. As I said above, the laptop screen is off, but it is still detected in system display settings.

Additionally, there is no sound. My volume is up all the way on my computer and on Rising World.

Quote from yahgiggle

when you close the lid it will make the other screen your default screen kind of but the game does not know this it looks at video card setting and sees your laptop as the default so loads the game there
heres a link to some info to change the delfault screen http://www.thetechrepo.com/mai…other-linux-distributions

Wonderful! Thanks that worked. (Note to Linux users trying this in the future: the first time, after I set the primary screen, that I switched to fullscreen, it crashed like usual, but after that it works.) If I click the screen or hit the keyboard at all when the splash screen is up, it'll crash and makes it almost impossible to escape it's mouse control without hard shutting down, so I'll refrain from clicking the splash .

Any ideas for the audio?

EDIT: Also, it won't let me use RedShift in fullscreen. If I set it before, it will cancel it when it launches. If I run the command when Rising World is running (in fullscreen), it will crash.

There is no audio. My computer volume is all the way up and Rising World volume is all the way up.

Sweet! That worked. Thanks for your help.