Thought I would revisit this once more to see if anything has been done. I have two UD-3900 devices; I use one with my Surface Pro and my wife uses one with her Lenovo Yoga2 Pro. In both cases, the UD-3900 is connected to an Acer touch-compatible monitor via HDMI/USB. With both setups, the touch functionality on the Acer external monitor is spotty at best. Often have to restart the laptops or unplug/replug the docking station to get the touch screen to work. Sometimes no amount of restarts/replugs will solve the problem and we just give up. On rare occasions, the touch function will work on the first try. Have tried the “Touch Calibration” process mentioned in another post, but the monitor doesn’t respond.
This is a tricky sort of problem, as the key component in this type of configuration is the touch screen itself. (The dock is essentially just there passing the touch data back and forth between the monitor and the PC.) Are both Acer monitors the same model?
Though since if the systems aren’t consistently recognizing ANY touch input from the Acers, I’m wondering if there’s a low-level detection issue between the docking stations and the USB/touch portion of the display.
When you have a few moment, and the systems are in the state where no touch is being recognized (even in “Calibration”), we’ll want to collect some system logs to see if there are signs of USB detection errors.