Posted by gouessej on May 31, 2012; 9:23am
URL: https://forum.jogamp.org/NEWT-KeyEvents-behaving-odd-in-Linux-tp4021912p4024319.html

Sven, it seems not possible to override this behavior only for a Java application by using X11 API, a change of setting affects at least the whole session or the whole X11 options. It is not a problem for a game but it is a limitation for applications.