Unable to display on monitor for Android M on Dragon Board 410c

I downloaded and built Android M using DB410c_build.sh.
Build was successful.After flashing the images unable to display on monitor.
adb shell and all commands working fine.
What are the reasons for not display on the screen?

Please help me out from this .

There’s two possibilities…

Firstly how long did you wait? If memory serves, on first boot, it it
nearly four minutes before an image first appears on the HDMI (it gets
faster after first boot is completed).

Secondly, I’m afraid this code base hasn’t got particular great monitor
compatibility (the freedreno display stack used in Debian has much
better monitor support). It might just be you will have to use a
different display device.