1. search overscan values.
Read default valuesroot@odroid:~# cat /sys/class/graphics/fb0/window_axis
window axis is [100 100 1919 1079]
root@odroid:~#
Try to set overscan values
root@odroid:~# echo 100 100 1919 1079 > /sys/class/graphics/fb0/window_axis
root@odroid:~# echo 0x10001 > /sys/class/graphics/fb0/free_scale
2. make script(overscan.sh)
root@odroid:~# cat overscan.sh#!/bin/bash
echo 100 100 1919 1079 > /sys/class/graphics/fb0/window_axis
echo 0x10001 > /sys/class/graphics/fb0/free_scale
root@odroid:~#
3. Auto-start overscan shell script on Ubuntu.
root@odroid:~# cp overscan.sh /etc/init.d/root@odroid:~# sudo update-rc.d overscan.sh defaults
left : 10
right : 1919
top : 10
bottom : 1070