How to change name after GC?

[joy8385]

I would like to change my name completely in my Indian passport and other documents. What is the procedure to do it - will a court order from the US state be fine to support my name change request at the Indian embassy? How long does such a request take for processing at the DC consulate? Please provide me with details.

Thanks in advance.

P.S: This is cross posted to find quick resolutions. Apologies if it is against forum rules.