Raspberry Os Lite USB touchscreen issues

[Simof]

Dear all,

I've cross-compilated a tiny GUI for Raspberry OS with Desktop and it works fine.
I tried to have the same result on Raspberry OS Lite but the touchscreen not works.

It is a USB touchscreen sensor and it is recognized correctly from the raspberry

If I try with a mouse it works fine.

What could be the problem?

[Pablo J. Rogina]

@Simof said in Raspberry Os Lite USB touchscreen issues:

It is a USB touchscreen sensor and it is recognized correctly from the raspberry

Are you able to have a non-Qt app working fine with that device in the OS Lite?

[Simof]

with this variables environment works, but if I set height and width then the labels in the gui appear very tiny

DISPLAY=:0.0
LD_LIBRARY_PATH=/opt/vc/lib
QT_QPA_EGLFS_NO_LIBINPUT=1
QT_QPA_EGLFS_PHYSICAL_HEIGHT=800
QT_QPA_EGLFS_PHYSICAL_WIDTH=1280
QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event0:rotate=180
QT_QPA_PLATFORMTHEME=qt5ct
XAUTHORITY=/home/pi/.Xauthority
XDG_SESSION_TYPE=x11