I successfully rooted my device using CF-Auto-Root but it appears to break screen mirroring.
Attempting to connect with the AllShareCast dongle now fails and my device displays the message " process cant be proceed due to a hardware error"
I successfully flashed it with "stock prerooted firmware" and had the same issue.
I was able to restore the factory firmware and fixed screen mirroring but lost root.
I have already tripped the Knox counter so I might as well be rooted or run custom ROM but I use screen mirroring regularly.
I have seen fixes for this on other devices but need help with the P-600