Open terminal and run this command for display configure
sudo nano /boot/config.txt max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 hdmi_drive=1
sudo nano /etc/lightdm/lightdm.conf
# for no sleep screen
[Seat:*]
xserver-command=X -s 0 dpms
 1. Editing the /boot/config.txt with the following changes: