You are using a touchpad instead of a mouse and you want to reverse the scrolling direction to have natural scrolling – with the screen content moving synchronously to the fingers' movement on the touchpad.
There is no "reverse scrolling" parameter in IGEL Setup.
- Open the device's configuration either locally or in the UMS.
- Go to System > Firmware Customization > Custom Commands > Desktop > Final desktop command.
- Enter the following command:
echo "pointer = 1 2 3 5 4 6 7 8 9 10 11 12" > ~/.Xmodmap && xmodmap ~/.Xmodmap
Save the settings and restart your device.
This will reverse the scrolling direction of a mouse wheel as well. Swapping 4 and 5 will reverse vertical scrolling, swapping 6 and 7 will reverse horizontal scrolling as well (if supported).