Linux 5.x and display issues
It seems that Linux 5.x makes the display corrupted as it goes to the X server. Plymouth is not affected, though. Even after activating the X server using startx, the display glitch won't go away. The exact same thing happened with the updated Linux 5.6.0-2 PAE version. Here are the pictures:
However, I still have 4.19 installed from Buster, and there are no display corruption there.
Is there any way to fix it? If there are any more information to be provided, please tell me.