I have a lot of monitor issues with the DTK. A basic old (spare) 1280x1024 monitor with HDMI to DVI cable does not work at all. Monitor gets in infinite loop , detected/not detected, and no signal is ever sent to the monitor.
A HDMI TV works at 1080p60 and 50, but as soon as switched to 24p or any other resolution, the same loop than above begins (detected/not detected).
Seems that monitor support is not yet mature on this box. Shame, that's exactly what I'm developing...