The custoemr use ADV7612 receive HDMI signal, and output to screen display with FPGA+HDMI transmiter.The video signal from Apple note book(there're two channel output HDMI interface).When they use HDMI cable connect between Apple note book and ADV7612, plug in/out HDMI cable frequently at the ADV7612 end. the sceen turn flowers screen and can't recover . Test the HS\LS\DE signal is normal, but the ADV7612's output TTL signal is not normal. And the customer's all this connection with Apple's notebook have same question. How to solve/check about this phenomenon?