Posts: 1
Joined: Wed Sep 10, 2014 12:27 am

Touchscreen support

Wed Sep 10, 2014 12:34 am

Hello, I just got a new 10" screen with capacative touch from chalk-elec and it has been working fine. The only problem I have is when I try to use the touchscreen it creates ghost touches and jumps and sometimes just freezes. On windows it happens too but it goes to the corner as well. Anybody got this figured out properly? I have tried re calibrating but it doesn't seem to do much. And I also tried creating a

Code: Select all

50-ntrig.conf in /usr/share/X11/xorg.conf.d/
. Any help is apperciated! :D

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Posts: 17
Joined: Sat Feb 11, 2012 11:17 am
Location: Malaysia
Contact: Website

Re: Touchscreen support

Mon Sep 22, 2014 11:21 am

This can happen when you have any strong EMI source nearby, like fluorescent lamp, high-voltage cable or transformer. Also, only N-Trig based touchscreen (like our old 10" LCD that you bought) are affected, because they have electromagnetic grid to support active stylus. Our new 10", and all others touchscreen LCD (7", 14", 15.6") are immune to EMI.
Chalkboard Electronics
Touchscreen and LCD solutions for RaspberryPi

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