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I have disabled the touchscreen on my official 7" display by adding the below line to my /boot/config.txt
# disable the touchscreen
disable_touchscreen=1
While this works, it also eliminates all ability to programmatically control the display. Everything under /sys/class/backlight disappears.
Is there a way to disable the touchscreen that will still allow the control of the rest of the display functions?
If you're using your screen with X server (GUI), then you can simply find its ID in the output of xinput --list and disable it with xinput disable <ID>. Your touchscreen will still generate input events, but your X server will not forward those events to the applications.
You will want to execute the xinput disable <ID> command at startup to make the change permanent.
yes indeed it's possible, if I remember correctly there's a pin dedicated to the touchscreen functionality, if you unplug it you'll loose the ability.
