While playing Nexuiz on my Ubuntu in fullscreen mode the volume control buttons on my laptop don't work at all, externally after minimizing the game increasing/decreasing the sound solves the problem but there is no in-game vol control?
Also when on headphones the game music plays on the laptop speakers as well as on the headphones!
What could the problem be? Is this a sound driver issue or x-org issue? its also happening with someone i know while playing Warzone2100 on Ubuntu 12.04.