MacBook Pro :: External Monitor / Mini Displayport Stopped Working On MBP
Jun 29, 2009
I have a 15" unibody MBP bought in Nov '08.
Had been using the Mini Displayport > DVI adapter just fine with both HDTV and Dell monitor, BUT then all output has stopped completely!
No monitor is detected by the laptop (although the display does blink blue, as if it had detected it), tried different cables, different displays, using the Displayport firmware update, speaking to Apple, deleting the com.apple..plist files, etc
Edit: it also doesn't work in XP on Bootcamp!!!?
None have worked even a bit!.. Also read lots of forum posts of similar problems, but I can't find a solution that works!
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Apr 28, 2012
So I spilled a small amount of tea on the left hand side of my MacBook Pro a few weeks ago. I immediately disconnected the power adaptor, forced shut down and placed the laptop level in a warm, dry area for several days to dry out. On boot up everything performed normally, and has done since, except that when I tried to connect my laptop to my TV last week, nothing happened. I use a Mini DisplayPort to VGA adaptor and normal VGA cable to connect to my tv, and have done this many times before with no issues. The laptop normally automatically recognises that an external display is connected and outputs a video signal - an extended display under OSX Snow Lion, or a mirrored display under Windows 7 Ultimate x64 running in Boot Camp - now literally nothing happens, the laptop does not seem to recognise or react to the fact that the display is connected, and no video signal is output.Â
My laptop is covered under AppleCare, but I realise that, as this is almost certainly liquid damage, there is probably little that can be done to have this fixed on my AppleCare. What are my options? I don't wish to pay out of pocket for what could potentially be a costly repair, but if there is a possibility to get the Mini DisplayPort working again I would like to explore it.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jul 1, 2009
I have a 15" unibody MBP bought in Nov '08.
Had been using the Mini Displayport > DVI adapter just fine with both HDTV and Dell monitor, BUT then all output has stopped completely!
No monitor is detected by the laptop (although the display does blink blue, as if it had detected it), tried different cables, different displays, using the Displayport firmware update, speaking to Apple, deleting the com.apple..plist files, etc
Edit: it also doesn't work in XP on Bootcamp
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May 28, 2012
I own a MBP 13 that I wish to connect with my Acer external mobitor. I bought a miniDisplayport to HDMI [male] cable for this purpose. Now the problem I am facing is that even though my 40" Samsung TV detects the MBP and works as an extended monitor, the MBP fails to detect the Acer monitor. However, I currently use the Acer monitor with my Mac Mini, Tata Sky+ set top box and also my Playstation 3
Info:MacBookPro, Mac OS X (10.7.4)
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Apr 29, 2010
So I've got a Macbook Air, a cheap 3d party miniDP to DVI dongle I just got from ebay that's connected to a DVI to VGA adapter which is in turn hooked up to an old-ish VGA monitor. The monitor isn't receiving any signals, so I'm wondering if I'm right in concluding that this setup isn't supposed to work?
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Apr 23, 2012
I have a 27" iMac and I'm using Samsung SyncMaster SA850 as a second monitor (connected via a display Port cable with a mini Display Port adapter). Everything worked fine until yesterday - the Samsung screen turned black and now it only works with max resolution 1280 x 1024 (native is 2440x1440). I think I upgraded Lion 10.7.2 to 10.7.3 (I don't remember for sure though). When I connect the monitor to an iMac with 10.7.2 everything works fine. And another iMac with 10.7.3 has the same problem as me.
Info:
iMac, Mac OS X (10.7.3)
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Jul 4, 2012
I have a MacBook Pro 2012 (Lion) and am connecting to my monitor via the mini displayport and a VGA adapter. This worked fine for a while, but now is intermittent. It's not the cable or the monitor as I have tried with several and get same results. The port works fine with an Apple monitor and no adapter. I've seen several threads on this, but no solutions other than starting up with monitor plugged in which I've done.I updated the OS and it worked fine yesterday, but today not working again.
Info:
MacBook Pro, Mac OS X (10.7.4)
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Mar 14, 2009
I have the standard 13" aluminum macbook, and I was looking into getting the 'Mini DisplayPort to VGA' adapter to connect my 22" Samsung monitor. On the Apple website, I have seen nothing but horrible reviews about the connection cable, saying that it exclusively does not work with Samsung brand monitors and TV's. On the other hand I only see good things about it connecting to other devices and monitors.
Can anyone shed any light on this? It's already ridiculous that i have to pay the 30$ price for this cable just to use an external monitor, the least I can do is know that it will for sure work.
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Mar 12, 2012
I had not used my external monitor in the last several weeks. I believe there have been a few OSX Lion updates since the last time I used the external monitor. I had installed all the updates prior to connecting my external monitor again. However, a few days ago I tried to connect the external monitor and all I get is a "No Signal" message on my external monitor. The Mini DisplayPort to HDMI works on my LCD TV, so I know the MDP works. I have also replaced the MDP-to-DVI cord and the external display still doesn't work.Â
I connected the external monitor to another computer running Snow Leopard and the external monitor works. So, the external monitor does work.Â
I have seen a few posts aboout this, but nobody seems to have a solution that works or is directly on point to my issue. I have tried to use all the scenarios for plugging in the external monitor and external monitor power. I tried to reboot the laptop with and withoout the external monitor connected. Same thing with the exteernal monitor plugged in and no power, etc. Nothing works. I have tried to repeatedly turn the external monitor on and off while connected to the MacBook. Again, that doesn't work. Here is what I am running:Â
MacBook, Aluminum 13" Late 2008
OSX 10.7.3
NVIDIA GeForce 9400M
Info:
MacBook (13-inch Aluminum Late 2008), Mac OS X (10.7.3)
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Oct 7, 2009
I have a presentation tomorrow and need to hook up my MBP to the projector in class. I bought an Apple Mini Displayport to DVI cable, and a DVI to DVI cable. I thought this would be the case, but come to find out the system does not support DVI. So I had to run to Best buy to get a DVI to VGA cable. I tried out the MDP > DVI > VGA rig on my external monitor and got nothing. The screen on my MBP responded by turning blue for a second and then back to normal...but the monitor said "No Signal". Is this some jargon with DVI-D and DVI-I? I need to know by tomorrow morning if I have to run back to the Apple Store and get a Mini Displayport to VGA cable.
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Mar 1, 2010
I have recently bought a 13" Macbook Pro and wanted to hook up an external display (an oldish acer 19"). I have a Mini Displayport to DVI adapter hooked up to a DVI -VGA adapter which leads to the display. I haven't got it to work yet. I have followed advice about closing the lid and using usb mouse and keyboard with no luck. The only thing that happens is that the screen on the laptop flashes blue for about a second after plugging in the Mini DisplayPort adapter.
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Jun 25, 2014
I often watch movies streaming on the internet by connecting my Macbook to my television via my Mini DVI to S-video adaptor cable. Last week, however, it suddenly stopped working. The television can still detect the display, but the image is super distorted and moving in a static-ey way. I can only vaguely make out the icons on my desktop on the TV screen. I thought that perhaps my adaptor cable was at fault, so I bought a new one - but the problem remains. I have also tried resetting the PRAM, repairing the disc and permissions with Disc Utility, and cleaning the Mini DVI port. I am pretty certain that it is a hardware problem with the port itself.  One of the pins on my Mini DVI port looks like it could be out of place. It is kind of squished at the bottom of the port instead of laying flat like the others. I’m thinking that this might be the culprit. Is there a way to repair the port without having to replace the whole logic board? The Macbook in question is a 2008 Core 2 Duo running Lion.Â
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May 11, 2012
Is there a noticable difference between using a mini DP DVI vs mini DP VGA to external monitor that has both types of inputs?
Info:
17 MacBook Pro i7, Mac OS X (10.6.5)
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Aug 19, 2007
I recently got a PowerMac G4. When I viewed it Everything was working. Upon me hooking it back up I noticed It was not getting any picture. The Monitor was brand new so I did not figure it to be broken I checked the monitor on another computer and it worked great. From what I understand this is a common internal problem on the G4.
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Oct 28, 2009
I have an ATI Radeon 4870HD graphics card which has a Mini Displayport and a Dual-Link DVI port.
I'm connecting this to two Dell U2410 which each have a Displayport, HDMI ,DVI and VGA ports.
I can connect one of the monitors straight to the DVI port, but what should I do with the other? I can't find a Mini Displayport to Displayport adapter for sale in the UK. But there are Mini Displayport to HDMI adapters and Mini Displayport to DVI adapters available.
Also, would it be best to have both monitors on the same connection? If i go the HDMI route should I buy a DVI to HDMI adapter for the other port? Or have both on DVI? Will there be a visible difference between the monitors if they're not on the same type of connection?
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May 1, 2012
my iMac has stopped detecting my external monitor. It is a new iMac running 10.7.3, the monitor is connected via the thunderbolt port.
It was working perfectly fine, now its stopped for some reason.
Info:
iMac, Mac OS X (10.7.3)
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May 8, 2012
My DVD drive has stopped working.
Info:
Mac mini, Mac OS X (10.6.8)
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Apr 16, 2010
I've been having an annoying problem lately. The ethernet port on my Mac Mini seems to have stopped working. It happened when I was switching routers. Most likely I just unplugged it from the old router, and into the new one. After that, no more connection, nothing changes when I plug something in.
As far as troubleshooting goes, I've plugged it into other ports, and into my MacBook Air (Just to get a Self assigned IP) and nothing works. I know these ports work with my other computers. I've reset the SMC and PRAM.It works in bootcamp so this makes me think it's not hardware. Any other suggestions?
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Jun 21, 2012
I have a mid 2011 MacBook Air 13 inch with a single Thunderbolt port. I have the Apple Mini DisplayPort to Dual-Link DVI Adapter cable which I am able to use to run a Dell 24 inch monitor - this cable connects to both the DisplayPort/Thunderbolt port and also a USB port on the Air. I want to be able to run this Dell monitor, and also run a Thunderbolt hard drive - one with 2 Thunderbolt ports. Is this possible? Can I connect the DisplayPort part of the cable to the pass-through Thunderbolt port on the hard drive, and then connect the hard drive to the Thunderbolt port on the Air? I would like to buy the Apple Thunderbolt display (which would solve this issue), but I suspect it will may refreshed soon. So I don't intend to get one until then.
Info:
MacBook Air
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Mar 13, 2012
I am trying to hook up an external monitor to my mid 2010 MBP. I used a Logiix mini display port to DVI, and then DVI over to the monitor.  The monitor is a Samsung Syncmaster EX2220. When I turn everything on the monitor says "check cable" which everything is brand new and I don't have spares on hand to try. My MBP screen flashes quickly like it does when I have hooked up other external devices, TV, or projector except nothing shows up on the other monitor. I have tried to change resolutions but again nothing, installed all updates, restarted both devices and reset PRAM. One other thing that I noticed is the monitor comes with a cd that has a windows device driver. I searched but could not find a mac device driver, yet on the monitor specific webpage it says its mac compatible. It appears to me that the monitor is simply not receiving any signal from the MBP?
Info:
MacBook Pro, Mac OS X (10.6.8)
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Dec 6, 2010
I've had my Macbook for about 3 years and have always been able to connect it up to my external monitor using a mini dvi cable.
A couple of weeks ago my hard drive died and since using the new one I cannot connect.
The external monitor shows my wallpaper but nothing else, no desktop, no dock etc...
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Apr 5, 2012
have been using Mail (to my Yahoo account) for a few weeks. A few days ago it just stopped working. Checked the Connection Doctor, no issues, able to connect with the Yahoo server. I am able to send email, just not receive. After a bit of reading I tried to do the Rebuild but it is greyed out. Also not able to delete email messages that are in the mailbox, I delete them but they are not actually deleted, they re-appear. Now I get a message box 'The file 10217.emlx' cannot be opened because there is no such file'.
Info:
Mac mini (Mid 2011), Mac OS X (10.7.3)
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Jan 8, 2011
I have a WD 2 TB My Book Home Edition external hard drive, I have had it for about a year... it worked fine I had a little over 1 TB of data on the hard drive and after coming home from vacation when I reconnected my hard drive it would not mount. The message was "Hard disk not recognized by this computer" so I properly disconnected the hard drive and replugged it in and reconnected to iMac and still same thing. I have tried everything in the book it feels like and nothing is working, and of course I did not have all the info backup with time machine (I REGRET and beat myself up for not) so I need to recover the data and I am not sure what to do. I did run Data Rescue 3 and it said that there was nothing on the hard drive to recover. Of course I am panicking and I have been told to send it off for Data recovery but that is going to cost up to 2,000 and I just want to make sure that this is my last resort or is it hopeless and should I just seek counseling for all the lost pictures of my kiddos...LOL I did try opening the case and inserting hard drive directly in a hard drive docking station
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May 13, 2009
I installed 10.5.7 yesterday. Immediately after the installation was complete, my Apple bluetooth keyboard stopped working. Went into Bluetooth system settings, and it said that there was no bluetooth hardware found... (it's built into the machine!!)...
Also, every time I start iTunes, it gives some weird error about Adobe Flash player. I'm not at home now so I don't have the exact wording of the error with me, sorry...
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Mar 15, 2012
Having been able to use most of the multi-touch gestures yesterday, this morning only the single-finger tap, 2-finger tap and 3-finger double-tap are having any effect. Swiping left, right, up or down with 4 fingers has no effect (although 3-finger drag in Google maps is working, together with 2-finger scroll).
Info:
Mac mini (Early 2009), Mac OS X (10.7.3), 2GHz 8GB
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Aug 18, 2008
Is it possible to use my iMac as an external monitor? I want to use my Mac Mini with it.
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Apr 17, 2010
I need to get a Mini DisplayPort to VGA adapter for my new MacBook Pro, but I know there are much cheaper ones about than the ones Apple sells.
Ideally, I'd like a single cable (rather than an adapter to plug a seperate VGA cable into) for a little less clutter on my desk, but if there's no decent solution I'll go with the adapter. I know most people recommend (URL), but I'm in the UK.
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May 2, 2012
I have a 13" MBP and just bought a new 23" external monitor connected via mini DVI to HDMI adapter.The monitor is recognized fine, but there is extreme jitter on the screen - basically very annonying and unusable.
Info:
MacBook Pro
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Mar 15, 2012
I've got a 2008 Mac Pro running Snow Leopard, and there seems to be some problems with my USB "system". When I eject an external hard drive, my usb mouse and keyboard will stop working for a short while, sometimes requiring that I unplug and plug them back in. Also, when I try to set my default audio input/output device to my USB interface, it resets every single time I turn the computer on and off. Not sure if these are related, but it seemed relevant.
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Jul 4, 2012
My speakers suddenly stopped working. I've unplugged, rebooted ect & nothing works. I get lots of feedback but no sound & my Imac will not show them as an option in systen preferences.
Info:
iMac, iOS 5.1.1, I think thats my operating system?
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