I have a macbook pro with lion os. and i want to connect it to my optoma dlp projector. when i connect through a mini display to vga adapter in MBP it detects as OPTOMA XGA but no image on the screen.

i have a macbook pro. i want to connect it to projector and i have a minidisplay to vga adapter. i could connect my MBP to benq projector successfully and for all other displays( Monitors). but when i connect it to optoma projector, MBP detects the display as OPTOMA XGA but nothing on bigger screen. i tried changing the resolution and refresh rate also but no changes.
In my office we got benq projectors , for that it is working very well.(plug and play).
and also i want to say that there is no problem with the optoma projector seems, because all other windows laptops are working well with that.
i was struggling with this since one month. i googled it could not find anything supportive for my problem. please help me regarding this. i am new to apple. i hope there must be genius around here.
thnak you

Rwogera wrote:
I couldn't transmit sound either, do i need another cable like Kim said? i mean it cant be transmitted through this HDMI port? as for me i have one of the latest mac pro with intel core i5..tnx
I need to know which MacBook Pro you have. Only mid-2010 and later MBP's transmit sound through MiniDisplay Port to HDMI. I have no information about the Mac Pro, so you might want to go to that Forum and ask there.

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