#include <hallo.h> I changed mouse driver from evdev to "mouse" and similar things do happen there. Buttons send wrong events, no button 4 and 5 events. And I cannot map them with xmodmap. Either it complaints about not specifying enough buttons - it claims to see 14 buttons (or 32! with evdev where there are only 10), or it accepts when I specify dummy numbers, but nothing changes in the mouse behaviour. Eduard.