[Milhouse]

What else I can check to confirm if the input is being received on /dev/ttyUSB0 ??

You can try build #1125x which has CONFIG_USB_MON=m enabled: Generic

With build #1125x you can enable usbmon and see what data is coming from the FTDI USB device:

Code:

modprobe usbmon
cat /sys/kernel/debug/usb/usbmon/3u | grep ":002:"

where 3 is the bus, and 002 is the device (check the current FTDI bus/device using lsusb)

Then press some buttons on the remote and see what appears - it might be gibberish, but this is the best I can suggest (there might be better options from other people).

This page may be helpful: https://www.kernel.org/doc/Documentation/usb/usbmon.txt