Created attachment 139808 [details]
Here is the video of the noise, watch the bottom of the screen

Thanks for the suggestion from Michel.

I tried the git://people.freedesktop.org/~agd5f/linux branch drm-next-4.18
whose last commit is b8f3439fa5358ac84d29fa2f4afa115500dec74c containing the
commit ebdef28ebbcf767d9fa687acb1d02d97d834c628.

It is better than before, but still has noise during loading amdgpu module.
The attachment is the video of the noise, watch the bottom of the screen.