How can I play Minecraft in fullscreen in Linux? On my system, I only get a windowed mode with a quarter of the screen size and the rest is black.
I am using ArchLinux and the awesome awesome window manager.
Be aware that currently (= version 1.2_02) I am experiencing an issue with controlling the GUI with the mouse when coming back from full screen. You might want to maximize the game window instead, for the time being.