HDMI not working for particular display

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1

I am getting display output when I connect BBB to 32 inch LG display while running default OS as well as with Ubuntu 12.04 on SD card
But when i connect BBB to Worldtech WT-1188U display i get NO Signal notification on display.

Tried changing HDMI resolution in uEnv.txt didn’t work out.

Need help…

2

Do you have a common ground between the BBB and Worldtech display?

Regards,