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, etc.

I'm hoping there's something obvious I'm missing, because this combination of 
technologies should work, from what I understand.
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