My MBP detects an external monitor... but no display on the monitor... ???

[anguyenn]

As said, my current set up is an HDMI - DVI cable (HDMI to monitor and DVI to adapter) and my DVI - mini DisplayPort adapter, everything is connected fine but when I turn on the monitor, it says cable not found... and nothing is displayed on the screen but on the Macbook side of things, it sees the monitor is connected (I can extend the screen and leave the screen) but other than that, it appears I cannot get an image on the monitor, pressing every button on the monitor does not work either.

Any other information that may seem necessary, let me know. I tried clearing my PRAM and clearing the power and such but nothing seems to work.

 

[failsafe1]

Same trouble?

I use two displayport adapters. One to a standard HDMI cable and the other to a standard VGA cable. Both were working a week ago. They don't work a week later. I am hooking them up from a unibody Macbook Pro purchased new in July and a Samsung HDMI TV. I wonder if the recent software updates have crossed something up?