[Interest] touch functionality not working with my Qt 5 apps

fsjunior fsjunior at gmail.com
Fri Apr 12 17:20:11 CEST 2013

VStevenP <vstevenpavao <at> yahoo.com> writes:

> I am trying to figure out why the touch functionality of my LG display 
isn't working with my Qt 5 apps.
> The touch technology is an N-trig DuoSense which is easily auto-detected 
and added as a USB input device by
> Angstrom 2011.03 (kernel 2.6.32) on my BeagleBoard-xM.
> (Note that kernel 2.6.31 and greater has mainline support for N-trig, and 
that Angstrom 2011.03 is
> configured with CONFIG_HID_NTRIG=y, which allows the touch functionality 
to work with Angstrom).
> However, when I run my Qt 5 apps on the BeagleBoard-xM, touching the 
display doesn't result in cursor
> control, and swipe gestures do nothing.  The mouse works fine, however.
> Shouldn't the touch functionality work automatically in this situation? 
 Note that the the touch
> functionality provided by the N-trig DuoSense can actually successfully 
control the mouse on my MacBook
> Pro if I simply plug it into it via USB.  I can make selections in apps, 
> I'm hoping there's something obvious I'm missing, because this combination 
of technologies should work,
> from what I understand.

Hi VStevenP,

I am having the "same" problem. I use Angstrom 2011.03 and kernel 2.6.32. 
But in my case even the tslib test software get any position event.

Do you have any advance in your problem?


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