Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have rather a strange issue when I try to connect a dell monitor to MacBook Pro. Firstly the Dell monitor won't detect the signal from MacBook if I connect it immediately after the laptop is booted. It takes a while (I didn't measure how long) for the monitor to detect the signal from MacBook after lot of attempts.

This is not the end of the problem. If I want to log in back after my MacBook goes to sleep mode, then it won't wake up. I have to disconnect it from the Dell monitor in order to log in back, worst of all sometimes I need to force shutdown the MacBook to log in back.

I am using a DVI connector from Monoprice to connect the Dell monitor to my MacBook.

What could be the issue? Any help is appreciated.

share|improve this question
What connector cables are you using? What brand are your adapters? – CajunLuke Aug 14 '12 at 15:13
MONOPRICE white connector to connect dell monitor and macbook – greg Aug 14 '12 at 16:37
I assume it's a mini DisplayPort to DVI adapter? – CajunLuke Aug 14 '12 at 17:10
yes thats correct – greg Aug 14 '12 at 18:16
is it causing the issue? how else should I connect? – greg Aug 15 '12 at 14:26

Given that nobody seems to have any idea what the solution might be, I'll give you the Ask Different Backup Answer to Hardware Problems (aka ADBAtHP): go to your local Apple Store (or Apple Authorized Reseller) and ask them. Take your Mac, the adapter, and the monitor so they can reproduce it. They'll probably try other monitors, other adapters, and other Macs to see what the issue might be. Hopefully you're under warranty and/or it's just a bad mini DisplayPort adapter, as that's the cheapest fix.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.