I'm trying to play with them miracasting dongles for a project I'm working on.
Just got myself a dongle from ebay, seems to work (producing video). However, upon attaching with Screen Cast (under display options) it works for 10-12 seconds and automatically disconnects without reconnecting.
Happened the same with a different Nexus 5 and a Nexus 7.
All devices were rooted, all have stock on them (4.4.2).
I've read somewhere that this issue might happen as part of a DRM mechanism (at Samsung Galaxy devices). When the Flash Counter is bigger than 0' the exact same smypthom happens.
Although I'm stocked, I did flash my phones (had to, they came with 4.4 and I wanted 4.4.2). CWM etc.
Anyone seen this issue? overcame it? couldn't find a lot of details about this in Nexus devices ..