Of course it only happens when the mouse moves. Only in this case the screen is redrawn.
I cannot test this on trusty currently. When I install usc nothing changes -- I still run a normal X session without the system compositor.
Of course it only happens when the mouse moves. Only in this case the screen is redrawn.
I cannot test this on trusty currently. When I install usc nothing changes -- I still run a normal X session without the system compositor.