Game window minimizing, mouse locked on Ubuntu 9.04 Jaunty

[belgianmadcow]

I run Ubuntu 9.04 Jaunty - no Compiz installed, had the same switch to window size (from fullscreen) and locked mouse a couple minutes into the game.

The solution was indeed to disable the screensaver - you can do so running gconf-editor in a terminal, or right-click the menu, choose "edit Menu", pick the system category, and enable "Configuration Editor" - then you can find the editor under Applications - System.

Once in the editor, choose apps category and gnome-screensaver - in the settings, now uncheck "idle_activation_enabled".

found that at http://ubuntuforums.org/showthread.php?t=278693
regards
bmc