Currently Being ModeratedAug 30, 2012 2:59 PM (in response to tmegirl)
Try a PRAM reset:
leave the external monitor connected and powered up. Power off your Mac, Hold down the keys option, command,P,R (no commas).
Power up the Mac press these keys before thestart up chime, hold them till it chimes 2 times then release.
See if this helps.
All the best
Currently Being ModeratedSep 5, 2012 1:39 PM (in response to sanjampet)
Thanks for the feedback. I have tried the PRAM reset procedure as you suggested. But it did not work.
Anything else I should do?
Currently Being ModeratedSep 5, 2012 3:30 PM (in response to tmegirl)
After the PRAM reset did you reboot the MBP and the projector?
If not, connect and power up the projector, the power up MBP.
The monitor itself could be on the way out, is there another monitor you can check it on.
Another thing you can try is a VGA cable with the DVI adapter and see if that performs better.
You can also try a different cable, since it worked fine in the past, I'm just trying to help you.
check some of these out:
I hope you can find something here, it's hard to source problems when the device(s) are not in front of you.
Let me know how this works for you,
All the best
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