Setup: Troubleshooting

Whitescreen

This indicates your driver is not working, please consult your touchscreen maker for installation instructions.

Boots to Blackscreen

X11 is using the wrong framebuffer for displaying TouchUI.

1. Run sudo nano /etc/X11/xorg.conf.d/99-fbdev.conf
   if file/path does not exist then create it

2. Find the following code:

   Section "Device"  
     Identifier "touchscreen"
     Driver "fbdev"
     Option "fbdev" "/dev/fb1"
   EndSection
   

   if not found, paste the code into the file
   if found, replace /dev/fb1 into /dev/fb0 or /dev/fb0 into /dev/fb1

3. Save & Exit (CTR-O, ENTER, CTR-X)

4. Run sudo chmod +x /etc/X11/xorg.conf.d/99-fbdev.conf

5. Reboot

Calibration

1. Stop TouchUI with sudo service touchui stop
2. Run curl -sLS https://apt.adafruit.com/add | sudo bash
3. Run sudo apt-get install -y xinput-calibrator
4. Run FRAMEBUFFER=/dev/fb1 & DISPLAY=:0.0 xinput_calibrator
5. Follow the calibration steps
6. After you completed step 6, pay attention to your command line, because it will show a wall of text with at the bottom instructions, please copy Section until Endsection and follow step 7
7. Run sudo nano /etc/X11/xorg.conf.d/99-calibration.conf and replace the file with the copied Section code from step 6.
8. Save (CTR-O, Enter, CTR-X)
9. Reboot

Inverted touch Y/X axis

1. Make sure you followed the Calibration part first!

2. Edit the calibration file you made sudo nano /etc/X11/xorg.conf.d/99-calibration.conf

3. Add the following line before the EndSection that you copied from the calibration:

   For inverting horizontal axis

   Option "InvertX" "true"
   

   For inverting vertical axis

   Option "InvertY" "true"
   

Webcam image not working

1. Download and install the plugin SnapStream (also available in the plugin manager)
2. Configurate the settings:

   1. Open a browser and type http://pi-ip-adrress:8080/?action=snapshot.
      If this works, then replace /webcam/?action=snapshot with /?action=snapshot and save

   2. If that didn't work, then try http://pi-ip-adrress:8080/webcam/?action=snapshot
      In that case, SnapStream should work straight out of the box