Monitor doesn't work when connecting TX1

Just got TX1. However, when connected with tx1 by HDMI, monitor which used to work for tk1 successfully gets no signal from tx1.

The nvidia dealer said that maybe our monitor should be changed into 2K, by which some of their customers solved this Problem.(it seems that the Problem maybe usual?) It’s so strange.

Often it is just the auto configuration failing, and the default fallback mode of the video does not happen to match a mode the monitor can use. Is the cable type purely HDMI all the way through, or are any adapters involved?

Do you have ssh access? If so, what is the output of:

sudo `find /sys -name 'edid'`

If not, then you may want to use a serial console. See one of these: