Problem with external Display and Yosemite

[dylin]

I did a clean install of yosemite, but I'm starting to have problems now connecting my macbook pro to an external monitor by mini display port to DVI.
It always hangs and just keeps a black screen on the mac, but leaves the monitor off.

Does anyone have the same problem?

 

[renatofast]

I did a clean install of yosemite, but I'm starting to have problems now connecting my macbook pro to an external monitor by mini display port to DVI.
It always hangs and just keeps a black screen on the mac, but leaves the monitor off.

Does anyone have the same problem?

I have the same problem with macbook 2009, is an original cable ? have you solved that issue ?