External Monitor not working on MacBook Pro 2015 with HDMI-VGA converter

I have an HDMI to VGA connector and a Samsung LED screen. The screen is fine, the VGA cable is fine, the connector is fine (tried with different laptops running Ubuntu and Windows). **The Problem**: I'm plugging the HDMI-VGA connector in my Macbook Pro 2015 but the display doesn't show on the external screen. What I've tried: I went in Displays and tried all given options like extend screen and more. The window also shows the name of the screen "SMB2230" on my Macbook and when I plug-in the HDMI, the screen flickers for a second and dock (on the right) disappears from the built-in display and I can move my mouse to the right and it also disappears but the external monitor shows the message "Check signal cable". I have tried restarting it as well but no luck. **Note**: The screen is working with other laptops running Windows and Ubuntu with the same connector and the same VGA cable. *Please don't tell me that I have to use MiniDisplay port/wire from Apple.* here is an image