I have a Dell u2715h monitor which has both a DisplayPorts in and a DisplayPort out. It claims to support DisplayPort 1.2 and MST (Multi-Stream Transport). I do not have a second DisplayPort enabled display to put after the u2715h in the daisy chain, but I was wondering if I could put an HDMI adapter on the Display Port output, and use that to connect to a second, regular monitor.
Theoretically this should be possible, as the MST spec says that the last device in a chain can be DisplayPort 1.1a rather than 2. And I don't see how any adapter is any different than an actual display. However, in practice, I am unable to get it to work.
Is my theoretical proposal sound? Or any ideas on how to get it working?