Forgive me, I am new to this and new here so any information will be gratefully recieved.
What have you tried: I have made a Pi 5 with the Pi 7 inch touch screen loaded with Kali.
What is the error: The Pi wont boot up on the touch screen, but will boot up on an external monitor and if you uplug the monitor the touch screen will then work.
After tunrning on, It looks like it will work but then just goes black. If a monitor is plugged into it, it will load fine and if the monitor is then unplugged the touchscreen then works fine.
What device is this on: Rasberry Pi 5 on a Pi 7 inch touch screen running kali