The screen goes black when i enable/disable f.lux
When i grant it root permission for the first time, the screen goes black. I turn off and on the screen and it works again. Disable/enable f.lux cause black screen again.
Here is the logcat file. Ignore the gokeyboard errors
My device is Sony Xperia Z3 Compact running Android 5.1.1. SuperSU 2.78