I today purchased the GTN 750 for use with X-Plane 11 and so far it's working great. The only thing I didn't find out was how to fly an LPV approach. When I load and activate the approach there is no vertical guidance, even if I set the autopilot to APP mode (and GPS source). The trainer announces "LPV" so I guess it's in the right mode. Everything else, like ILS approaches, holdings, go arounds etc. all work fine. Did I miss a setting or step?

P.S.: tried with Carenado C90 and TBM850

Hi, you need to ensure 'link HSI' option is enabled for the GTN to 'drive' the HSI needles, and to make sure the GTN is the 'master' device (menu option). Are you setup like this?

Yes! It's working now. Thank you!