I now use XIPNKPC4_CORE_CF35_120416. In this version, is activated for me the first time, the 2D hardware acceleration. Now the LCD flickers at me sporadically, if contents are redrawn. In this short time the screen goes black. I turn off the acceleration, the screen no longer flickers. But after a restart, the acceleration is always enabled.
What can be wrong?
Or how can I disable the 2D Bescheunigung permanently?