**** I changed the title to 9360. It had shown 9343. That was incorrect. ****

I'm having problems with my XPS 13 (July 2017) and external displays. I have an adapter (USBC to HDMI) that I've used in the past for without problems. I've used it to connect to projectors for presentations and to both external monitors and occasionally TVs. I haven't used it in a while. I just tried it and go nothing on the external display. I've tried toggling through the various options (duplicate display, only external, extended display) with no success. Interestingly, the F8 toggles shows all those options even without the adapter plugged. My impression is that in the past it did not show those options unless a display was detected - but I could be wrong about that. I'm wondering if one of the many Win10 , BIOS, and driver updates has changed something. Any ideas?

Thanks

Tom