I am all new to this. I have a 27" LCD with what is identified as Ilitek Multi-touch screen.
Raspberry Pi 4.14.18-v7+
My system will identify the touch screen but the touch points are not right - I have no idea how to get it configured correctly. On top of that I need to rotate the display and the touch screen 90 degrees so they function correctly in portrait mode.
in the /boot/config.txt file - the command
display_rotate=1 90 degrees
Works! The display is rotated. However the command lcd_rotate=1 does not seem to do anything for the touch screen.
I really need to get this figured out as this is needed for a trade show display next week.
Anyone here with any suggestions?