My GX touch has teh same aproblem with flashing. I guess its the USB extension. I can solve this with adjusting ghe brightness than it stops flashing. But other Problem is, that the Display runs automaticly from dark mode in light mode. I set up that it should shut down after 10 sec. But the adjustemnt will nit work. It stays dark for some hpurs than the dark mode stops an all lights are on.
