completly resolved with : sudo ln -sf /usr/lib/xorg/modules/extensions/libglx.so.169.07 /usr/lib/xorg/modules/extensions/libglx.so
i dont know why....
completly resolved with : sudo ln -sf /usr/lib/ xorg/modules/ extensions/ libglx. so.169. 07 /usr/lib/ xorg/modules/ extensions/ libglx. so
i dont know why....