Touchscreen 15 inch

[ZAIAC001]

Describe the bug
Touchscreen offset appears in PINN
(In systems everything is normal)
Offset seems random on each tap

To reproduce
Just connect touchscreen

System
Pi 5 8gb + NVME + Touchscreen (Via hdmi and type-c for data)
Link to my screen on aliexpress

[ZAIAC001]

Im trying to make some kind of tablet and it would be great if this problem will be solved

[ZAIAC001]

Maybe I need some drivers in PINN?

[procount]

You would need to identify which drivers are required for your touchscreen e.g. in Raspios.
Use something like lsusb before and after plugging in the touchscreen to identify which drivers are used.

[Numidara]

I have a similar problem for a touchscreen on RASPAD3 :
https://www.sunfounder.com/products/raspberrypi-tablet-raspad?variant=37227248386209
Any fix ?

[procount]

PINN is very small and only supports a limited set of touchscreens (Raspberry pi 7" & Hyperpixels), and even then, only for models before the PI5 (i.e. no KMS support yet).
Probably the RASPAD3 needs different touchscreen drivers.
I don't have access to a RASPAD3, so you would need to identify which touchscreen device you are using, what drivers it is loading up, and any specific configuration needed in config.txt to enable or configure it (if necessary).

If the touchscreen works ok in Raspios, have a look in the output of dmesg and lsusb (if connected via USB) for any mention of the touchscreen to identify it.

I can then look to adding the correct drivers.

[Numidara]

222a.0001.txt
222a:0001 ILI Technology Corp. Multi-Screen ;)
https://linux-hardware.org/?id=usb:222a-0001

Thank you in advance :)