Black screen before screensaver initialize

I am try to write a simple screensaver for RaspberryPi, 
it ower PWM pin slowly disable backlight of lcd display.

It works, great. But after screensaver is started 
the screen is filled with black color. As i discovered 
it happens immediately before screensaver starts.

Is there a possibility to disable this behavior?

Logout Mark Read Team Forum Stats Members Help
Black screen before screensaver initialize0
This forum uses Lukasz Tkacz MyBB addons.