MacBook Pro :: Mini Displayport Can't Detect External Monitor
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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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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Sep 8, 2014
I bought a MBA 13" last month and now I'm trying to connect an external monitor through a Mini Display Port-to-HDMI adapter and most of the times the display shows a message "No signal detected"...
I've tried all the possible combinations between the MAC and the Monitor but it would seem a random matter.
Info:
MacBook Air (13-inch Mid 2012), Mavericks 10.9.4
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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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Jun 29, 2014
This is my first Mac. I cannot get it to detect my external display:Â It is an ASUS PA248Q, manufactured Aug 2012.
The HDMI cable according to my Amazon history is at least 1.3c from 2010, "Fanatic Digital Imperial Series Gold-Plated HDMI Cable (6 feet)". It works with perfectly connecting an AmazonTV box to an old Samsung TV, with vivid clarity, unlike our cableTV signal.
Just in case, I have a new HDMI cable on order, which claims to be of newest standards. The Macbook Pro Retina (late 2013) has the standard Intel Iris from the Haswell chips, as well as Nvidia GT 750M, the latter which I don't think has been used yet.
The ASUS display says:Â HDMI NO SIGNAL.Â
I have tried shutting them down and replugging the cable. I don't know what the ideal order is. The Macbook Pro is plugged into AC power, as suggested.
In System Preferences>Display, I press the Option key to select "Detect Displays" option (seriously unintuitive).Â
I have also tried resetting the NVRAM:
I shut the machine down. Pressed the power button, then quickly held the quadruplet: Option-Command-P-R (a double handful) and waited for the machine to chime a 2nd time. Tried to detect external display no luck.Â
Next, I reset the SMC:
I shut the machine down. Then I pressed Shift-Control-Option-Power  for about 5 to 10s. Then I turned on the machine normally. NVRAM & SMC steps were from an old youtube video, as the instructions I had did not explain how to do so clearly.
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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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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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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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Apr 10, 2012
I have a VGA monitor plugged in to my imac using the VGA adapter to the mini-DVI. All was working well. Since I updated over the weekend, the computer will not detect the monitor.Â
Info:
iMac, Mac OS X (10.6.8), VGA Adapter
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Apr 7, 2012
I'm using a mini display port to dvi adapter and dvi cable. 17" macbook pro is several years old and software is up to date.
the first picture is from the imac, the second is from the laptop.
Info:
iMac, Mac OS X (10.6.7)
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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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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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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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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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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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Oct 9, 2009
I have a 13" MBP and it won't detect my external display. It works fine on my sister's whitebook using, but won't detect at all on the MBP. I've went to "detect displays" under system preferences, played around with the cable, and made sure the monitor is on. It work's flawlessly on my sisters. What's wrong? Any suggestion on what I should do? I'm losing my mind right now. The screen on the MBP goes blue for a sec when the external display is connected, but then just goes back to it's original desktop.
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Jul 28, 2009
I have a new MBP 13", and I was wondering is it possible to use a Mini DisplayPort to DVI -adapter and a DVI-VGA adapter combined? Or is it just the safest way to buy both of the Mini DisplayPort -adapters (to DVI and VGA) separately, even though I would have an extra DVI to VGA adapter.
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Apr 18, 2010
I'm gonna get the new MBP 13" really soon, and I'll need the Mini DisplayPort to VGA and to HDMI cables. Where, besides Apple Store, should I get these cables?
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May 3, 2009
I am wanting to connect my MacBook Pro, which has a mni displayport, to my TV. My TV is still of the CRT variety, but supports component video (R, G, B RCA connectors). Has anyone has any luck doing this?
I have found mini DisplayPort to DVI-I adaptors and DVI-I to component video adaptors. Will connecting the two between my Mac and my TV provide me with a working solution?
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Apr 22, 2009
I got the Aluminum MacBook late 2008 version and as most should know that the macbook comes with a Mini-Display Port. Today i went to buy a Mini DisplayPort to DVI Adapter because all my monitors at home have the DVI slot. I hooked it up and everything works fine as it should be. But next week i have a presentation to do in University and apparently my uni only have the VGA slot available, so therefore i want to know if it would work by hooking up my macbook with the Mini DisplayPort to DVI Adapter, then use a DVI-D to VGA adapter and finally a VGA cable to the Projector for the presentation?
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Mar 16, 2010
I am trying to get my projector to display movies, tv, etc. from my MBP. I got the Mini DisplayPort to VGA Adapter but it doesn't seen to recognize any connections going out to the projector. It does not come up with the "mirror the display" option in the displays section of the system preferences. Is there a way to troubleshoot the Mini DisplayPort to see if it's working? I downloaded the firmware patch with the Mini DisplayPort to VGA Adapter hooked up to the projector but it was unable to install it since it said that the Mini DisplayPort to VGA Adapter was not detected! I'm thinking that there may be a malfunction to the Mini DisplayPort... Is there any way to check it? I tried 2 different VGA cables. The only thing left would be an issue with the adapter.
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May 26, 2012
IS THERE A apple Mini DisplayPort to HDMI adapters
Info:
MacBook
Pro, Mac OS X (10.7.4)
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Jul 2, 2009
I know there have been a couple other threads on this from a couple months ago but I need to bring this back up... has there been a final verdict that the reason the mini displayport doesnt support audio is due to a hardware limitation or a software limitation?
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Feb 24, 2012
MBP 13" (Late 2011) --> Moshi MDP to HDMI Adapter --> iogear 4x1 HDMI Matrix --> LG 24" LED DIsplayÂ
Xbox 360 and Tivo are also on HDMI MatrixÂ
I dock the MBP with all my cabling, close it, and use a Wireless Apple Magic Mouse and Wireless Apple Keyboard with it. If I switch to port 2 or 3 on the matrix, the MBP will sleep. I have installed both smartSleep and InsomiaX to try and prevent this from happening. The MBP needs to run 24/7, even if that might be damaging. To mitigate heat issues I run smcFanControl to change the minimum speed of the fan to a higher level. The Xbox 360 and Tivo access music on this Mac, and so if it is sleeping; it kind of defeats the intention I am going for here. The iogear has no possible way of signalling the MBP to sleep. Also a Gefen HDMI Detective is not a reasonable fix. Also FWIW: This happens even if I physically unplug the cable, not just if I switch the port on the matrix. Kudos to the first person who finds a permanent fix for this issue. Â
tl;dr - Prevent Macbook Pro from sleeping on Mini-DisplayPort disconnection.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Feb 1, 2009
In a month or so I'm going to need to do a Keynote presentation with a projector. I have the new MacBook, so I need the Mini DisplayPort to VGA Adapter. It doesn't seem to be getting good reviews though (many saying it doesn't work for them). I will not be able to test it out with the project until the day of the presentation. Is there any other way to connect the MacBook to what I assume will be a basic projector?
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Jun 6, 2010
I just got a new MBP, and I like to use my notebooks connected to my HDTV for movie watching and some occasional gaming. I was looking around at cables (mostly at monoprice) and no one seems to have a mini displayport -> hdmi cable that will carry the audio signal.
Has anyone seen them available online?
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