Fedora – How to disable the on-screen keyboard when I use the touch screen

This is only a partial answer. Other folks should feel free to copy this as a basis for their answers.

Touch screens input devices can be opened as simple mice, or with full access to their touch-screeniness via /dev/input/... and evdev stuff.

You need to get your X server to use the input device as a touchscreen. The X server translates touch-screen events like dragging along the side into mouse-wheel events, for example. Apps that want full gesture (multi-touch) support would need to open the Linux input event device themselves, instead of just getting X11 pointer position / mouse button events.

Kernel drivers for your specific touchscreen should be getting loaded automatically when you plug it in, unless the generic USB mouse driver claims the device first.

Look in your kernel log (dmesg) to see log messages about it. lsusb could help find device ID stuff to search for in the kernel log.

I have it working now. The first thing I did was to install the latest version of the display driver from the xorg repo. I'm not sure if this step was absolutely necessary since it doesn't seem to have changed the output from xrandr much, but it didn't hurt anyway:

$ sudo apt-add-repository ppa:xorg-edgers/ppa
$ sudo apt-get update
$ sudo apt-get dist-upgrade
$ aptitude search <my-graphics-card-brand>
$ sudo apt-get install <corresponding package>

Now xrandr shows DP-1 with more properties:

$ xrandr
Screen 0: minimum 320 x 200, current 2732 x 768, maximum 8192 x 8192
eDP-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1366x768      60.00*+  40.00  
   1360x768      59.80    59.96  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   960x600       60.00  
   960x540       59.99  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   800x512       60.17  
   700x525       59.98  
   640x512       60.02  
   720x450       59.89  
   640x480       60.00    59.94  
   680x384       59.80    59.96  
   576x432       60.06  
   512x384       60.00  
   400x300       60.32    56.34  
   320x240       60.05  
VGA-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1366x768+1366+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1360x768      59.80    59.96  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   960x600       60.00  
   960x540       59.99  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   800x512       60.17  
   700x525       59.98  
   640x512       60.02  
   720x450       59.89  
   640x480       60.00    59.94  
   680x384       59.80    59.96  
   576x432       60.06  
   512x384       60.00  
   400x300       60.32    56.34  
   320x240       60.05  
HDMI-1 disconnected (normal left inverted right x axis y axis)

And then start X and run the following command to assign eDP-1 as the touchscreen:

$ xinput --map-to-output $(xinput list --id-only "Elan Touchscreen") eDP-1

The manpage of xinput (v.1.6.2) mentions that the device name can be given as a string as well. Therefore, this would also work:

$ xinput --map-to-output "Elan Touchscreen" eDP-1