I just installed a new ROM and kernel on my EVO, and now have full HDMI mirroring from the phone, yay!
I can connect via Gizmo, and start playback, and everything is fully mirrored on the TV, however, it keeps dropping the connection/refusing to connect to Gizmo, and pausing playback if I do manage to get it working.
I don't know how this mirroring might affect Gizmo's connection to the server, but it's not a problem I've had prior to mirroring, so I think they are related somehow.
I tried on another monitor, in another room, further away, but with the phone connected to power, and had no issues. Is it possible that the power required to send the signal is just too much to keep the connection to Gizmo? Seems unlikely, but I can't think of any other explanation.
I have full signal during both attempts, over wifi.
Also, any chance of video on Gizmo getting a higher resolution, it's pretty poor quality when scaled up to 720 to match this TV?