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External Display not working with MacBook Pro 13" (early 2011)

I just bought the current MacBook Pro 13" (i7 processor). My external display (Benq 20"W, 1600x1050) always says "No Signal Detected!". I've tried it with a DVI-Adapter (Griffin Video Display Converter) and with a VGA-Adapter (LMP Mini DisplayPort-VGA-Adapter). With lower resolution I once got a picture (but with weird lines). On my old MacBook (white, 2.16 Ghz) there was never a problem with this display (also OS X 10.6.6). Who can help?

MacBook Pro (early 2011), Mac OS X (10.6.6)

Posted on Mar 9, 2011 12:24 PM

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27 replies

Apr 29, 2011 9:56 AM in response to Christian Herter

I have the 2011 Macbook Pro 13" i7, I tried 3 Monitors (8", 15", 24") and 2 TVs (26" 42") with the Apple mini-display to VGA. 3 different VGA cables... I have tried OSX and Windows 7... none of the setting works. All Monitors reporting no signal...

However, all this monitors work with my old 2006 Macbook, so this is very clear there are problems with the new Macbook Pro... hopefully, a firmware fix will solve the problem...

May 9, 2011 11:30 AM in response to Christian Herter

Just installed MacBook Pro-Software-Update 1.4 and now thunderbolt->hdm->dvi works! (and keeps working with the MacBook Pro EFI-Firmware-Update 2.1 as well). I'm happy that this problem is finally solved.


Now I just hope that all problems are definitely gone and that all my serial ata ports are doing well. (I plan to install some sata-III SSD in the future and want to be able to use full speed of 6Gbs.)

Jun 14, 2011 1:58 AM in response to Christian Herter

I find a way to solved.


The new macbook pro need use a special VGA cable in windows7.


The VGA port has 15 pins, normal VGA cable just used 3+6 pins, the other pins aren't connection between two VGA port on the cable.


But new Macbook pro (MC700) in Windows7 need use the VGA cable: all 15 pins are connection between two VGA port on the cable.


Now, I use the cable, everything is fine.


🙂

Jun 28, 2011 4:42 PM in response to Christian Herter

Hi,


I am having a similar problem with my new 2011 13" MBP.


I previously had a 2008 macbook and 2010 13" MBP that I would hook up to a Dell LCD/TV Monitor using a monoprice mini-displayport to VGA adapter.


However, when I used my 2011 MBP it would not display anything. I went to the Genius bar and they weren't able to explain the problem, as the adapter worked fine at the store.


I read that it might be a problem specifically with dell tv/lcd monitors so I went out and purchased a new BenQ LED monitor. It worked perfectly initiallly for the first few days, but now is no longer recognized again.


Seems like it's the thunderbolt/mini-displayport problem.

Jun 28, 2011 11:52 PM in response to calvinfromvancouver

Since the MacBook Pro-Software-Update 1.4 I didn't have any problems anymore (but did not use many different monitors as well). But I still feel somehow uncomfortable when entereing a demonstration room with a projector I haven't tested before with my MacBook Pro.

(I remember the old times when all the Windows people where having difficulties with beamers, but all the mac people just started using them. It's a pitty that end user testing has become so much important in these days.😟)

Oct 11, 2011 10:38 AM in response to BSteely

I'm using Apple's "Mini Display Port to DVI Adaptor" linking my 17" 2011 MacBook Pro and an old 30" Apple Cinema Display (DVI) under Lion 10.7.1. I'm reasonably satisfied with the result but would like to get more than 1280x800. That seems to be the best I can get out of this combination. The 17" MBP gets 1920x1200 so I had expected to get that on the larger Cinema Display. Turning Mirroring on or off makes no difference.


Is there a trick to this?

Apr 17, 2012 5:58 PM in response to Christian Herter

I found another fix to this. The problems that I were having:


MBP 15" Early 2011, Lion 7.2.3) were:

MBP Internal LCD = Secondary

External Mini -> VGA (External Monitor as Primary)


After reinstalling LION, when it went into sleep, and I turned it on, sometimes the external display would be ignored totally. Despite SMC and PRAM resets, nothing resolved this.


Only today, I've noticed that the following resolved it EVERY TIME, and finally, I found a permanent solution:


Sympton Fix:


1) Close the laptop lid with the Mini-DVI/VGA/etc... disconnected & waiut for it to go to sleep. If not, force it to go to sleep via the  -> sleep.

2) Start up again, when fired up, DISCONNECT the MagSafe PSU, and wait a few seconds.

3) Plug the magasfe in again (I personally switches sides incase of dirty contacts)

4) PLug the Mini-whatever back in and it should fire up again.


Permanent fix:


1) Before you perform the above, go into  -> System Preferences -> Energy Saver

2) Under 'Power Adapter' DISABLE the 'Automatig graphics switching', I personally disabled the 'dim screen brightness option' below too.

3) Repeat The sympton fix


This seems to ahve got shot of my issue... After 3 new Mini adapters, and 2 new VGA cables, I happened to work this out no thanks to apple support :-/

External Display not working with MacBook Pro 13" (early 2011)

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