hello everyone
after years and years of practice i was finaly able to dual boot archlinux in my n900 i was even able to install xorg and xfce the probleme is that when i'm inside a xfce environment i noticed that the mouse is a little bit creazy in fact when i point up it point down and vice versa the same thing for left and right even more i can't reach the margin of the desktop with the mouse

does anyone have solution

Thanks