With my new Pi 4, I am having a ton of difficulty getting the display output correct. I have eventually managed to get the resolution correct with a combination of the boot config and the screen configuration tool, however I still have overscan which I cannot seem to stop. I have tried setting
disable_overscan option to one in the boot config, which didn't work, I have also tried setting the
overscan_left, overscan_right as well as top and bottom without any luck either.
So far this is my edits/additions to
disable_overscan=1 hdmi_group=1 hdmi_mode=20 hdmi_drive=2 sdtv_mode=2
Normally setting the screen res and overscan would work on my other pi 3. So I am a bit confused as to what's going on.