There are options to adjust the the overscan settings in /boot/config.txt
.
# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=0
# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16
Is there any way for me to "test" the overscan_*
settings instead of manually editing the config file, restarting the system, checking if the settings need adjusting more, then restarting until all the settings fit nicely with my monitor?