MBP no longer drives external display @ 1920x1200

I have been using an external LaCie 526 display on my MBP at the native res of 1920x1200 for almost a year. Today after running a keynote presentation on an LCD projector (may be coincidental) I can only get the dvi to drive it at 1280x720. All of the standard rubber chicken tricks don't have any effect (reset PR, detect displays, turn on/off mirroring, etc). Like many others in this forum using the DVI to analog svga connection does allow the higher res.
Any suggestions much appreciated.

Lots of people are having issues with external displays since there was a manufacturing defect with the nVidia 8600M graphics chip inside the Macbook Pro. You may want to run the Apple Hardware Test from the cd your Mac came with and see if it gives you any errors with the video controller.
You may want to check out this article: http://support.apple.com/kb/TS2377

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Why doesn't my MBP recognize my DVI external display?

After using my MBP and 30" Dell 3008WFP monitor for about 2 years... the system quit recognizing the display.
No dropping the MBP, no software updates, no unusual activity, no cable changes... nothing. One day it works the next it doesn't.
I've read so many blogs earlier today with people fixating on cables and adapters, but I'm not sure they have much to do with this one... because nothing has changed in my experience, but the MBP no longer detects the display and the display no longer detects the MBP?
I've tried changing eerything, but no luck. Can anyone help me sort this out? Thanks in advance for your replies...

You need to set them up via 'system preferences'.
On your pop up screen go to preferences and then to print&fax
From there use the + button to add a printer of your choice...
Be aware that some printers do not have automatic drivers for mac and therefore you may need to get that from the internet... unfortunately most makers treat Windows as priority still!
I have a very expensive pair of printers in my office the B&W works and the Colour cannot use a Mac driver, go figure!

MacBook no longer detects external display

When I hook my computer up in my home office I connect an external display using the Apple VGA dongle.
Previously, when I inserted the dongle the display would blank out for a moment while detecting the display, then reappear with the VGA output enabled. This is no longer the case. When I insert the dongle, my screen doesn't blank out, and the VGA output will not enable. Its like it doesn't even know I'm inserting the dongle.
I have inspected the dongle for broken pins and dirt, but it appears to be making a good connection.
Is there something wrong with my Mac, or is it the dongle? Is it worth taking this to a genius bar in hopes they can try a different dongle, or shed some light on the situation? Thanks in advance.

Try plugging the display in and then going to System Preferences>Displays and clicking the "Detect Displays" button.

Unibody MBP owners with *working* external displays, please chime in.

I'm trying to determine if there's any use at this time to try to exchange the MBP (unibody) I have now with another unit in the hopes of getting proper external display support. (To be clear, I'm referring to the external display problems many of us are having, like in this thread, and this one, and others.)
I'm sure there are others suffering from this problem who are simply seeking another datapoint in determining whether or not exchanging one's unibody MBP for another are of any use at this time. So the question here is:
If you have a unibody MBP, and you are successfully driving an external monitor without issue (using the Mini DisplayPort to DVI Adapter), can you kindly post the following information?
1) External display model (manufacturer and model)
2) External display screen resolution
3) Any information about DVI cable, length, brand if applicable, etc.
4) Have you confirmed proper operation in both 9400 and 9600 GPU modes?
5) If you know, is your MBP equipped with the 9c84 or 9c85 built-in display panel?
6) If your setup wasn't originally working, but now is working due to a unit swap or swapping out of the Mini DisplayPort to DVI Adapter with a new one, can you kindly note that?
Please do not consider yourself representative of a properly working external display setup if yours looks mostly good, with just minor artifacting--that is, for the purpose of this thread, please consider "working" to mean only perfectly normal operation of an external monitor from your unibody MBP.
Are all of the above points necessarily relevant? I don't know yet, but I figured it's best to try to get as much information from those who have working units, to try to determine what's relevant and what isn't.
Why am I asking this? Because I've already wasted enough time with this unibody MacBook Pro, now on my third unit, and I do not want to waste time making trips to the store to exchange units (and the time necessary for restoring to the new unit, etc.) if it's not going to help things. (The previous two replacements had nothing to do with this particular problem, and I didn't have my external display until the third unit, so have no idea if the previous two suffered from this particular problem or not.) If it seems that an exchange from one unibody MBP to another isn't going to help, then those of us who need to resolve this might learn more information with which to make a decision. Right now, I'm seriously considering exchanging for the current 17" MBP with matte display, even though it's not the new unibody design, and doesn't quite match up in the specifications with the new 15" MBP--I just need to get my setup working, and figure the older style of the 17" might be more tested and worked out.
Thanks in advance to those of you who fit the bill and answer these questions.
NOTE: If you have more relevant information to ask of those with working setups, please do; but please avoid the discussion of your problems if you're among the ones (like me) with external display issues, as there are other threads for the discussion of that (like the ones linked above). Ideally, I envision this thread as more populated by the responses of those with working setups.
Message was edited by: isonoise
Message was edited by: isonoise

Mine works perfect.. This is AFTER a logic board replacement for the 9600's BSOD problem
1) Dell 2007WMP
2) 1680x1050
3) Cable that came with monitor
4) Post repair only really using 9600, though 9400 seemed fine too
5) LG (9C84)
6) Logic board replaced last week for BSOD problem. (That board had external monitor refusing to wake problem as well).
Message was edited by: Robert Derelanko

MBP or Air - using external displays

Hi All,
Looking at getting a MBP or Air for work, want to know how easy and how well Leopard goes from dual display to single display. I'll be using a VGA adapter initially.
My current MS laptop doesn't handle being plugged into, or unplugged an external display - the display settings often seem to change by themselves. However, it is the devil I know - is Leopard better, or worse?
Looking for general experiences using a MBP or Air OPEN with a second display.
Do you need to put the computer to sleep to plug or unplug the display?
Cheers, Chris

Hi WBW,
Thanks - sounds pretty good.
A follow up question - when using dual screens, I can place some applications on the second (external) display. When I unplug the external dispaly, how does Leopard handle this? Do the apps reappear on the laptop screen, or are they in another 'space'?
Can spaces be used in conjunction with an external display?
Chris

Lots of red dots on MBP 2010 internal and external display

Hi all,
Anyone's got any suggestions?
Over the last months there's been an increasing number of red dots all over the display (both MBP's own display and when connected to external display). The dots appear on different places (not static dead pixels) and especially where darker graphics appear (when playing games or just watching pictures or editing pictures, for instance). Especially playing games is impossible because of this graphics distortion. However, the degree of the problem varies.
Is this a hardware or software problem? I haven't had any problems with Apple hardware before.
Best,
Thomas

Thanks for the suggestions. I haven't had the opportunity to test on a different OS / boot, but I did try to change the energy saving settings as advised, but the problem persists.
Is it possible to attach an image file (screenshot of the issue) here?

Closing MBP Without Sleep With External Display

Greetings.
I have just hooked up a Dell 23" flatscreen display to my Macbook Pro. Everything works great... connected it via the DVI cable and it worked immediately.
I'd like to be able to turn on my MBP and use the large display exclusively, meaning I want to be able to close the MBP without it sleeping. I have put my Energy Saver preferences on "Never" for the display and computer itself, but those options do not work.
What is the protocol for closing the MBP after startup so that I may use my display without the whole thing going to sleep?
Oddly, I was able to "trick" the MBP into closing at one point; I shut the clamshell, it fell asleep along with the Dell 23", then I reopened it just slightly to where it would awake again. Then I used the display for a little while and shut the MBP clamshell again and the 23 still worked while the MBP was closed. Not sure how/why it worked, and I have not been able to duplicate it.
The split screen option is neat, as far as like the MBP being on the left and the 23" being on the right, but I don't need it, and my desk is too small anyway.
How can I achieve MBP sleep while it is still powering my big display?
Thanks,
C

Ha. Welp, best $8 I ever spent.
I SWWWEEEAAARRR I tried that earlier this afternoon; also I like totally swear I looked up and down the support site too. I knew it would be easy, just not that easy.
Thanks!
C

Upgraded to Yosemite and Windows 8.1 Pro in Bootcamp, can no longer drive retina display and two external monitors simultaneously?

Greetings
I just upgraded from Mountain Lion and Windows 7 Ultimate (Bootcamp) to Yosemite and Windows 8.1 Pro on a late 2012 MBP 13" Retina. Prior to the upgrades, I was able to drive the retina panel and two external monitors simultaneously when operating directly in Bootcamp. Now, I can only drive 2 of the 3 simultaneously though all three are recognized under Graphic Properties. I simply cannot find any option or profile under Graphics Properties or Options or Personalization to run all three screens.
My hardware hasn't changed and this worked prior to the updates. I have no issue on the Mac OSX can run all three. I also have no issue doing it in Windows under Parallels Desktop 10. It is just when I boot directly into Bootcamp that this happens. What am I missing?
Thanks,
G.

Great point, Loner T. It was late when I was working and I thought about this afterwards also.
The issue was that in Windows=>Control Panel=>Display, under "Change Display Settings", the three screens showed but "Extend Display" was not selected for one of the screens. It was simply off. I can't believe I danced around this w/o picking it up sooner. In fact, it has happened in the past that for some reason a display loses this setting.
As an aside, thanks again for all of your help and terrific input to upgrade both the Mac and Windows operating systems. As I was going from Windows 7 Ultimate to Windows 8.1 Pro, one thing I did come across that made life much easier was to upgrade first to Windows 8 so I could keep my apps. The jump from 7 to 8.1 would otherwise migrate my personal files, but not programs and require a lot of time to reinstall all. This was completely avoided by going to Windows 8 first.
Thanks, again, and very much appreciate the work that you do here.
Best,
G.

MBP i7 and Dual External Displays

is it possible to run 2 external 1200x1600 dvi(digital) displays from a MacBook Pro 15" i7?

The cheapest way to do this is probably to use the mini-display port for one monitor , and a USB or firewire based video out card for the other.
It may produce some latency issues , but if you need a cheap fix it might do the job for you.
http://daggle.com/macbook-pro-multimonitor-4-monitors-at-once-1577 may give you some ideas on the matter.
Cheers
Rod

External display's brightness can no longer be controlled with external keyboard in 10.8.2

I can no longer control external display's brightness with external keyboard.
Until now my external keyboard controlled external display's brightness and MBPr's keyboard MBPr's brightness. Now the only way of changing external display's brightness is via Display preferences which is cumbersome
Is there any way of going to pre 10.8.2 settings?

I noticed that the keyboard and tablet were'nt working when plugged into a usb hub or monitor usb port. I had to plug in the keyboard and tablet into a mbp usb port where they worked. For some reason, after plugging them back into the usb hub they worked again. Could just be dumb luck though.

XP on my MBP and an external display

I am posting here because I got no love in the boot camp directory. Hi, I have a macbook pro (2.33 GHz intel core 2 duo) that I use for both work and home. We are remodeling our home and I am finally getting a home office put in. I have dreamed for years of getting a large external display for when I work at home. Some of my work requires Windows programs, so I bootcamped my mbp, installed windows XP (SP2) on the other side of my computer and everything is great. My question is once I hook my mbp up to an external display and external keyboard (and mouse) will I be able to reboot it in windows and have everything work (the external display, keyboard, and mouse)?
I searched somewhat through teh forums and couldn't find anything, but it is highly likely that I missed if this question has already been answered, so sorry about that.
Any help/suggestions is appreciated.

If your external display, keyboard, and mouse are all Apple products, then you should be okay, as you would have installed all of the necessary drivers when configuring Boot Camp on your Windows XP partition. Check the Boot Camp installation guide for more information.
If your external display, keyboard, and mouse are of another make, you may have to download the required Windows drivers from the manufacturers' website.
I have had a few different screens work on the XP partition of my MB Pro with no problems.
Good luck!

Not Detecting External Display - 24" Gateway FPD2485W

Hi everyone,
I'd really appreciate any help I can get on getting my monitor to display at 1920x1200.
My setup:
Mac Book Pro 2.2Ghz
4Gb memory
128 M video memory - NVidia GeForce 8600M GT Memory Card
OSX - 10.5.2
Bios - MBP 31.0070.B05
External Display - 24" Gateway FPD2485W
What I've tried... all manner of plugging in the display, then booting up, then laptop then powering up display. I've applied the latest bios. I've run apple-opt-P-R at startup.
I haven't yet been able to get it to detect this display. Can anyone confirm that the 128M card can handle the local display plus a 1920x1200 display? From what I've read, I believe this is possible. Anybody got any other suggests for me to detect the monitor and set a display resolution higher than 1440x900?
Thanks,
Alan

Hi Mac Wise,
Thank you for your response.
I am using the DVI connection and it displays normally, but just can't detect the monitor. It gives me the default 15" MBP resolutions... do you get different behavior? I can't go higher than 1440x900.
Thanks,
Alan

MBP doesn't detect external diplays?

My MBP will not detect external displays. I tried to install some updates, like apple support said to do, but errors occured, and the OSX update couldn't be installed. I had computer hooked up to my tv, working fine, up until a couple weeks ago. HELP?!?!

Just to be clear: When I select the propper HDMI input on the TV, the screen on the MBP flickers blue for a few seconds, so there's got to be connectivity, right?

Removing external display, what is right way to wake up the internal?

I tried connecting to an external display (an HP L1955) via a DVI cable, closed the MBP, and was able to get the HP display working at its native 1280 x 1024. But then I wanted to go back to the internal display, so I disconnected the cable, but then found I couldn't wake the MBP. I hit the F7 a couple of times, moused down a couple of times, and finally it woke, but what's the correct procedure to go back to the internal display.
I guess it's different when running mirrored or extended, that is, using both displays -- I presume I just disconnect it and all is fine. (question though is what happens to windows on the extended display if I disconnect it -- are they off screen and not retrievable?)
Also, one nice thing about this display is that it has both VGA and DVI inputs, and their independent. I have a winbox connected via VGA, and I can switch between the inputs with a push of a button. Kinda cool to see that happen...

To use your MacBook with an external monitor with the MacBook display closed, you need to connect a USB keyboard and mouse. The User's Guide recommends turning on the external display first before connecting to the MBP, then it will automatically detect the display. Pressing F7 switches between mirroring or full-screen mode. After putting the MBP to sleep by closing the lid, wait a few seconds before pressing a key on the external keyboard to wake the MBP and use the external display.
I do not have my MacBook Pro yet and I don't use an external display (tried it before just playing around). I would wake the Mac before disconnecting the external display though.

How well does 24" iMac drive a 1920x1200 external display?

For various reasons that I shall not expound upon, I'm thinking about selling my Mac Pro and replacing it with a 24" iMac. The catch is that I'll need a second 24" display (1920x1200), and I want to be sure that the iMac can drive it without any problems.
Does anyone here drive an external 24" (or 23") 1920x1200 display with their iMac? If so, how is the video performance? Is Expose and video playback smooth on both monitors? Do you sense any decreased performance on your iMac due to driving two high-resolution displays?
Thanks for your input.

i have my imac dual core connected to a sony bravia 40w2000 and it's stunning
so good , that the next mac i get will be a mac pro and use the bravia as my screen
1920 x 1080 via hdmi

MBP no longer drives external display @ 1920x1200

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