The ADV7842 hot-swapping cannot detect the signal

Hello, I have been doing the function of HDMI signal hot swapping in ADV7842 recently, but after about 2 weeks of debugging, I have been unable to do the HDMI signal hot swapping normally.

Now the question is this:

1. Now it can be hot-swappable, but it needs to be swappable for four times in a row.

2, only the fourth time will detect the HDMI signal, the rest of the first three times in any case is unable to detect the HDMI signal.

Thank you very much!

Mr. Zheng