Mini Display Troubleshooting

Does anyone know how to troubleshoot a mini display port, mine just stopped working,i plugged my display out and when i got home from the office my external display there did not pick up so i thought it was the adapter, got to the office and same problem here now, when i plug the adapter in(without the screen attached) my macbook air's display dims and goes back on- showing me the adapter works and the port works? i tried plugging it into a colleagues screen- same issue, does not pick the screen up?

This is not normal. A power reset will not fix the problem; you should visit your local Apple Store/Genius Bar and request a repair or replacement. There's nothing you can do yourself.

Similar Messages

Mini-display port to hdmi cable not working consistently

I have a MacBook Pro (15-inch, Early 2011) 2GHz Intel Core i7, 4GB, Intel/ATI combo video - Yosemite 10.10.2. I purchased the monoprice 15" mini-display port to hdmi cable and it worked perfectly for about 1 month or 2. Now when i plug in the cable, the MBP doesn't detect that I have a second display connected at all. I assumed the cable died so I tested it on my iMac. The cable worked. Also when I try my Monoprice 15" mini-displayport to VGA cable, that works on my MacBook Pro. I can't figure out what is causing my MacBook Pro to "forget" how to detect this cable. Anyone out there experiencing the same? I tried PRAM reset to no avail. Any suggestions would be great.

Hello David,
If you are having issues using your external display with your MacBook Pro, check the article below to continue your troubleshooting with resetting the SMC as well. Work your way down the article if you still are having issues after that.
Apple computers: Troubleshooting issues with video on internal or external displays
https://support.apple.com/en-us/HT201177
Regards,
-Norm G.

Mini Display Port To HDMI Cable Not Working?

Dear members,
i have a mid 2010 13" macbook pro which i have been using a mini display port to HDMI cable which also carries audio for for years now.
I went to use it last night and have to pull the cable out and plug it in a few times to get it to work.
Tonight it just wont work at all no matter how many times i pull the cable out and plug it in again!
Before i use to just connect it and boom, screen would go off then on and it would also mirror on to my TV.
My TV is a 32" Toshiba TV, i tested the HDMI ports, working fine. The mini display port to HDMI cable works fine on my 42" TV downstairs.
Any one know of a fix for this?
Thanks.

Hi DjTimmyM,
Thanks for visiting Apple Support Communities.
Start with the steps below to troubleshoot issues with video out from your MacBook Pro:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Reset the system
You can reset the Mac's parameter RAM and SMC.
Best Regards,
Jeremy

MacBook Pro(Mid 2012) Can't connect to my Dynex TV with mini display port to VGA adapter

I have a MacBook Pro(Mid 2012, running OS X 10.9.4) and I recently just bought a mini display port to VGA adapter so I could hook it up to my dynex TV but when I connect everything my TV says no signal. Do I need to do something in settings?

Hi psikalis,
If you are having issues connecting an external display to your MacBook Pro, you may find the information and troubleshooting steps in the following articles helpful:
OS X Mavericks: Connect multiple displays to your Mac
http://support.apple.com/kb/PH13814
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Regards,
- Brenden

Connecting Cinema Display with mini display port to macbook pro with thunderbolt port

I am trying to connect a 27" cinema display (2010) that has a mini display port cable out of the back, into my macbook pro (2013) with thunderbolt ports. The mini display port cord fits into the thunderbolt port on the Macbook Pro, however the macbook pro does not detect the cinema display and the cinema display does not have any picture on the screen. The USB plugs in fine and sound comes out, and I have the adapter for the magsafe to magsafe 2 and that works fine, it just the actual display. Any help would be appreciated!
Thanks!

Hello mmholt,
Welcome to Apple Support Communities.
It sounds like there’s no video on an Apple Cinema Display that’s connected to your MacBook Pro, and you’re wondering if the configuration is supported. It is supported, take a look at the article linked below for more information.
Thunderbolt ports and displays: Frequently asked questions (FAQ) - Apple Support
1. Can I connect a Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to a Thunderbolt port on my Thunderbolt-equipped Mac?
Yes. A Mini DisplayPort display or a display connecting with a Mini DisplayPort to VGA, DVI, or HDMI adapter will work just like it was connecting to a Mini DisplayPort connector when plugging in directly to the Thunderbolt connector on your Apple computer. Click here for more information on Mini DisplayPort connections and adapters.
Also, this article provides a lot of great information and troubleshooting tips that will resolve most issues related to video external displays.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
So long,
-Jason

Mini display port to HDMI adapter not working

I can not get my MacBook OS X to dispaly on my new Samsung LED TV. I have a mini display port to HDMI adapter (two years old) conneted with an HDMI cable (new) into the HDMI input on the TV. I tried both inputs, tried resetting the TV, plugging, unplugging, restarting, checked all my system preferences...I can not figure it out. I took my cables to a local store, tested the HDMI cable, and it works. Tested the adapter and they had the same problem I have on my Mac. The screen will flash blue when you plug it in, but will not show up in the TV. I think the adapter must be bad, nothing else makes sense???

Hi Kater24,
Apple doesn't make a Mini DisplayPort to HDMI adapter, so the one you've got there is a 3rd party one that's designed to work with the Mini DisplayPort on your Apple computer. The adapter is pretty much plug-n-play, there's no configuration necessary. Plug it into the machine, the HDMI cable from the other end of the adapter into your TV, select the HDMI input on your TV and fire up the computer.
If that's not working it's possibly an issue with the adapter and/or cable to the TV. Any chance you might have access to another TV for troubleshooting purposes?

Can I connect a 27" Cinema Display to an ageing iMac? I have a Mini-DVI to DVI Adapter fronting a Kanex C247DL to complete the MIni-DVI to mini display port. Sound is good but screen is black.

Can I connect a 27" Cinema Display to an ageing iMac? I have a Mini-DVI to DVI Adapter fronting a Kanex C247DL to complete the MIni-DVI to mini display link. Sound is good but screen is black.

Hey phil staton, highland,
Thanks for using Apple Support Communities.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Have a nice day,
Mario

HT3382 I have a Samsung VGA Monitor connected to my MacBook Pro using the Mini Display Port to VGA Adapter. How do I configure the computer so that it doesn't sleep when I close the lid of the computer.

I have a Samsung VGA Monitor connected to my MacBook Pro using the Mini Display Port to VGA Adapter. How do I configure the computer so that it doesn't sleep when I close the lid of the computer.

Hi alangium,
Welcome to the Support Communities!
Resetting your computer's PRAM should restore your Macbook Pro's screen appearance.
OS X Mavericks: Reset your computer’s PRAM
http://support.apple.com/kb/ph14222
This article may provide some information about your Mini DisplayPort to AVI adapter. Have you tried to connect a different VGA monitor to your Macbook to see if you get the same results?
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
http://support.apple.com/kb/HT3382
18. What is the maximum resolution available for use with the Apple Mini DisplayPort to VGA adapter?
The resolution available with the Apple Mini DisplayPort to VGA Adapter is 1920 x 1200. VGA displays that use higher refresh rates (such as 85 Hz) at resolutions of 1600 x 1200 or greater may not generate video properly until you lower the refresh rate.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573#5
How can I detect displays?
If the detect displays option is not available, hold down the Option key while you are in the Display pane.
How do I select additional resolutions on my display?
You can use the Display pane of System Preferences to specify how your display works. Not all options appear for all display models. By default the best resolution for your display will already be selected in System Preferences.
To select a different resolution, use the Scaled option. Some additional resolutions may be available when you hold the Option button.
I hope this information helps ....
- Judy

I need to connect a computer monitor to my MacBook Pro but have found that when using the mini display port to VGA adaptor the screen display on my macbook is very small font. Please what do I do to correct this?

I need to connect a computer monitor to my mac book pro, using a mini display port to VGA adaptor. But have experienced a drastic reduction in font size on my
Mac screen even before I have managed to check the result on the monitor screen. Please how do I compensate for this and restore my mac screen appearance?
Many Thanks Alangium in uk

Hi alangium,
Welcome to the Support Communities!
Resetting your computer's PRAM should restore your Macbook Pro's screen appearance.
OS X Mavericks: Reset your computer’s PRAM
http://support.apple.com/kb/ph14222
This article may provide some information about your Mini DisplayPort to AVI adapter. Have you tried to connect a different VGA monitor to your Macbook to see if you get the same results?
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
http://support.apple.com/kb/HT3382
18. What is the maximum resolution available for use with the Apple Mini DisplayPort to VGA adapter?
The resolution available with the Apple Mini DisplayPort to VGA Adapter is 1920 x 1200. VGA displays that use higher refresh rates (such as 85 Hz) at resolutions of 1600 x 1200 or greater may not generate video properly until you lower the refresh rate.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573#5
How can I detect displays?
If the detect displays option is not available, hold down the Option key while you are in the Display pane.
How do I select additional resolutions on my display?
You can use the Display pane of System Preferences to specify how your display works. Not all options appear for all display models. By default the best resolution for your display will already be selected in System Preferences.
To select a different resolution, use the Scaled option. Some additional resolutions may be available when you hold the Option button.
I hope this information helps ....
- Judy

MacBook Pro - connect to TV via HDMI Mini Display adaptor

Can't connect macbook pro to my TV and view/listen to what's on my mac on the tv. I am using an HDMI cable from the tv to a mini display port HDMI adaptor. When I go to system preference, display it doesn't have an Arrangement tab to mirror. It only gives me tabs for Display and Color. Any help would b appreciated.

Hello pdr4d,
Based on your post it seems you are unable to get video on an external display. The following article may help you find a solution:
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.
Thank you for contributing to Apple Support Communities.
Cheers,
Bobby_D

MacBook suddenly won't detect my display, Using Mini Display Port to VGA?

MacBook suddenly won't detect my display, Using Mini Display Port to VGA?

dohdoh1985, I have the exact same problem also! I recently bought a 42" RCA LCD TV. I connected my MacBook Pro to my TV using a Dynex Mini DisplayPort to HDMI adapter that I got from BestBuy. It worked great until I upgraded to Mac OS 10.6.4 and then it suddenly stopped working. Same TV, same settings, same cables, same adapter. Nothing changed since the last time it worked except that my OS was upgraded to 10.6.4, so i am assuming that is the culprit. The symptoms are EXACTLY the same as what dohdoh1985 described; when I plug in the TV, the laptop display flashes (3 times) as though it is detecting an external display and the picture on the TV briefly goes from blue to black for about 1 second then back to blue. The TV does not appear in the display menu / control panel and there is no sign that the MacBook detected it. I went through the usual troubleshooting steps (reset PRAM, checked connections, tv settings, etc) but nothing worked. Other HDMI sources (i.e. Blu-ray player) work fine on the TV using the same HDMI cable on the same port so there is nothing wrong with the cable, the TV or the TV's input settings.
Meanwhile, I can still connect my MacBook to my external ViewSonic monitor at work without any problems. It's just the TV that's not working.
I cancelled my cable subscription a while ago since I only watch shows online nowadays and this was my only way of watching TV shows, so I'm quite upset.
Apple, please help!

Mini Display Port behaving badly. Anyone else have this problem?

I have had an ongoing issue with a mini display to VGA adapter, every time I plug it in it becomes erratic over the course of use. It will lose signal and send the monitor blank if I go to remove any of the usb peripherals in the back of the unit. I have returned the unit to Apple 2x now and they have replaced the logic board 2x and the mini display to VGA adapter, yet this is still happening.
I have tried it with different monitors and cables etc, but this is still going on.
Is a mini DVI to VGA any more reliable?
Has anyone else had this issue

Thanks for the suggestion , but after an extensive talk with tech support and running through the usual troubleshooting regime we came to the conclusion that the best thing for all concerned is that Apple send me a mini DVI-VGA adapter. I am cool with that. No matter what combination of adapters and cables and monitors I plugged the mini into I kept coming up with the same results and my local guys had the same thing happen.
Thanks anyway.

Imac 14.2 mini display port to HDMI TV - Mavericks - does not detect display?

Hi,
I have a new Imac 14.2 with thunderbolt port. I have connected a mini display port to HDMI cable. connected this to a TV. But in preferences>display, no external device is connected. TV is turned on. I have restarted the iMac. Any ideas?
thx

Hi w andersen,
Thanks for visiting Apple Support Communities.
If your TV is not recognized by your iMac when you connect it, I recommend the troubleshooting tips found in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Start with these steps:
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Reset the system
You can reset the Mac's parameter RAM and SMC.
Best,
Jeremy

Mini display port dead?

My mini display port seems to have stopped seeing external displays. This is a problem, as I need to use projectors for presentations. Neither the mini-dvi nor the mini-vga adapters are detected.
Is there some tool or program I can download to see if the display adapter is still working before I take it to the store?

Hi Tom,
Unfortunately there really isn't. If multiple adapters do not work and you know the adapters aren't faulty then it's a pretty safe bet to say that the port may have failed. I know in my troubleshooting an issue, if I take a "known good" adapter that doesn't work I'm inclined to believe that the port is then not working properly. Especially if it's multiple adapters.
You can certainly try resetting the PRAM and SMC, it won't hurt but it'll unlikely change anything. The next best method would be to get the machine into a service provider / retail store and go from there.

Mini display port which adaptor?

I have a mid 2010 iMac 27 inch i5 processor and would like to buy a mini display port to via adaptor but cannot determine which adaptor mini display port I need.
Thanks

Please review this link sent by Jason L several days ago. I think you will find your answer there. If you do, please indicate your question was answered. Thank you & Good Luck.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support

Mini Display Troubleshooting

Similar Messages

Maybe you are looking for