Default ScreenMirror fix for custom ROMs (Tab3 8.0 311)

Hello,i have look a lots of here in xda,but i can not find a help for my problem.
I have the Rom from Samsung on my Tab 3 310.Then i have make root on it with CF-Auto-Root (everything is ok),but my screen mirror do not work after that.I have found some other XDA threads that have fix this

thats for Galaxy S4...

but no one of this fix work with the stock rom from Tab3 8.0 310.

And the TriangleAway fix don`t work on the 310(it is not supportet) .hmm

I have flash other ROMs too,but no one of that have working with ScreenMirror.

Can somebody help me with this?

Thanks Paul G. (the Thread name is wrong....i have a 310,sorry)