Tweaks to make things look better on a raspberry pi official touchscreen

config.txt

# /boot/config.txt

#####
# Commenting out `dtoverlay=vc4-fkms-v3d` as disabling GPU acceleration is required in order to be able to rotate the lcd.
# More memory is assigned to the GPU by setting a new value to `gpu_mem`
# `lcd_rotate=2` Rotates the display by 180°
#####

# ...

[all]
# dtoverlay=vc4-fkms-v3d
gpu_mem=128
lcd_rotate=2

lightdm.conf

# /etc/lightdm/lightdm.conf

#####
# `-nocursor` hides the cursor
######

# ...

# xserver-command=X
xserver-command=X -nocursor

set_display_brigthness.sh

#!/bin/bash

val=$1

if [ -z "$val" ]
then
        echo "\nPass in a brightness value between 0 and 255, for example:\n    $  sh ${0} 50\n"
else
        sudo bash -c "echo $1 > /sys/class/backlight/rpi_backlight/brightness"
        echo "\nDisplay brigthness set to $val.\n"
fi