Target Display Mode on late 2013 27" iMac to mid 2010 27" Imac

Hey guy's real strugling to make my 2010 imac become a display, When i connect my 2010 cinema display 23" everything works fine but the minute i try to enable the tdm function on the 2010 imac nothing happen. Like nothing I got the mini display to thunderbolt adapter but nothing happen with the imac.
Any help or suggestion is very welcome.

Target Display Mode 2009 & 2010 iMacs
Target Display Mode And Thunderbolt
iMac- How to use your iMac as a Target Display Mode display
iMac (Mid 2011)- Target Display Mode does not work with Mini DisplayPort cable

Similar Messages

2010 iMac target display mode with 2013 Mac Pro

I have a 2010 27-inch iMac that I want to use with target display mode for a 2013 Mac Pro. I have a mini display port to mini display port cable connecting them. When I plug the cable in the iMac screen goes black, but eventually reverts back to iMac desktop. Pressing Cmd-F2 makes it go black again, but eventually reverts back. I was under the impression that this was the correct cable to use to connect, but it doesn't seem to work. Anyone have ideas for what to do? What am I missing? Thanks!

You can use the cheaper single link adapter
<http://store.apple.com/product/MB570Z/B/mini-displayport-to-dvi-adapter>
if you don't have more than two DVI or HDMI displays.
<http://support.apple.com/en-ca/HT202801>
If you will be using more, you can still use a single link adapter, but it must be ACTIVE, such as
<http://www.amazon.com/Accell-B087B-005B-DisplayPort-Single-Link-Certified/dp/B00 4071ZX0>

Using Macbook 2015 with old iMac in target display mode?

Opinions about the new 12 inch Macbook 2015 aside, I am wondering if I can use my 27 inch iMac mid-2011 in Target Display Mode.
I also had trouble finding "daisy chain" solutions to this. Ex. An accessory that will allow me to charge the Macbook while also providing a thunderbolt port in order to output the display into my iMac.
Am I just being too impatient? I have a feeling I will need to buy a load of different adapters just to try and work with the new Macbook's USB C...
Just for more information, I'm currently using my 15 Inch Macbook Pro Retina Mid-2012 connected to my 27 inch iMac in target display mode through a thunderbolt cable. I'm just hoping I can have this simple setup also work with the new Macbook 2015..
Thanks.

Yes, that model supports Target Display Mode. You will have to wait for Apple to provide adaptors for such use.
Target Display Mode- Frequently Asked Questions (FAQ)
Target Display Mode 2011 & Later iMacs

2008 iMac - Target Display Mode?

Hi! I am a little confused it looks like newer versions of the iMac 2009+ support target display mode but I can't find any info on older iMacs. I have a 2008 iMac that has a mini DVI on the back and a 2010 MacBook Pro with mini displayport. My question can I use the iMac as a monitor for my MacBook Pro? Can I take a mini displayport cable to DVI and a DVI to mini DVI to the back of the iMac? Or is the mini DVI on the back of the iMac an output only? If so does it allow you to use a second monitor?
Thanks!
Guy

I hear you - I'm trying to make it 4 (at a little over 3 right now) because I have some camera gear I want to buy first. My iMac has been crawling a bit lately especially when running Aperture. Just did a fresh Lion install this weekend and it seems to have improved. Was thinking about getting a super beefy Mac Mini and a 27" Cinema Display instead of an iMac next time - that way I can upgrade sooner and not feel so bad about it. Keep the Cinema Display and replace the Mac Mini every 3. Else bite the bullet and get a Mac Pro - but not sure I want a giant cheese grater

I have a late 2010 MB Air (mini display port) and a new 2013 iMac (thunderbolt) which I would love to use as an external display. I suspect that target display mode won't work.Any ideas for how to achieve this?

According to the TDM support page, this isn't possible. I tried it with a Mnidisplay port to minidisplay port cable without success. Its a shame that thunderbolt doesn't appear to be backwards compable as I could have achieved this with an older iMac.
Cheers

You are correct....it will not work. Please carefully read Apple's Target Display Mode: Frequently Asked Questions (FAQ)

Target Display Mode not working iMac 27(2012) Bootcamp to iMac 27(2013)

Hi All,
I recently purchased an iMac 27" 2013 which replaced my iMac 27" 2010.
===============
PREVIOUS SETUP
===============
(1) iMac 27" 2012 - Running Windows 8.1
(2) iMac 27" 2010 - Running OS X Mavericks
(1)+(2) were connected with a Mini-Display-Port cable.
(1) was using (2) as external display while (2) was set to Target Display Mode using CMD+F2
==============
CURRENT SETUP
==============
(1) iMac 27" 2013 - Running Windows 8.1
(2) iMac 27" 2012 - Running OS X Mavericks
(1)+(2) are connected with Thunderbolt cable.
(1) can't use (2) as external display anymore becuase CMD+F2 has no effect anymore on (2) in this scenario.
If (1) and (2) are both running OS X all works as expected.
I am aware about the support hint from Apple where they state TDM is not working under Bootcamp.
And I agree, while booted into Windows Bootcamp this machine can't serve as external display. Makes sense because TDM is baked into OS X display drivers.
Anyone had the same experience and came to a soltuion?
Thanks,
Martin

"Apple has no plans to implement a client driver for Windows since there is no Thunderbolt SW stack available for Windows like there is for Display Port."
That is a little bit funny since Gigabyte and other big companies have said that 2014 is the year that they are going to implement Thunderbolt in many motherboards.
"GIGABYTE 7 series motherboards are the very first to offer fully certified dual onboard Thunderbolt™ ports. Capable of connecting up to 12 devices plus 3 digital displays simultaneously with breathtaking data transfer speeds that can transfer 1TB of data in only five minutes, GIGABYTE Thunderbolt™ motherboards offer the fastest connection interface on the desktop PC."
Have you asked Apple about that? I dont understand why Apple is crippling Thunderbolt on their devices...

How to activate Target Display Mode on iMac 27", Late 2009?

Hi all,
I'm trying to use my iMac as a display for my PC. Unfortunately I can't activate the iMac's Target Display Mode (TDM) through a DVI-to-miniDisplayPort cable.
As far as I know, the TDM exists on my iMac (27 inch, Late 2009).
I am following these steps:
(1) start the iMac,
(2) start the PC,
(3) press Cmd+F2,
but nothing happens on the iMac (as if I didn't press anything).
The PC's DVI output works on another screen, though.
Here are my settings:
- iMac: 27 inch, Late 2009, 2.8 GHz Intel Core i7 with miniDisplayPort, OS X 10.8.4 (12E55)
- PC: Gigabyte's GTX 770 graphic card with DVI-I output, Windows 8 fully updated
- between the two: DVI-D cable plugged into Apple's DVI-to-miniDiplayPort adapter
Any advice?
Thanks a lot :-)

Please very carefully read:
support.apple.com/kb/ht3924
In it you will see that TDM only works on a late 2009 iMac in Mini Display Port to Mini Display Port, no other configurations will work. If your iMac is an early 2009 iMac (please check the Tech Specs for each on Apple's website) TDM is not supported on that model.

Can windows 8.1 in boot Camp display in target display mode on an IMac?

I have given up on Windows 7 running in Boot Camp on my 15" MacBook Pro and displaying it on my 27" IMac via thunderbolt and Target Display Mode.
The FAQ concerning Target Dsiplay Mode farily clearly says Windows 7 won't work.
But it does not say Windows 8.1 will or will not drive Target Display Mode via thunderbolt.
see: http://support.apple.com/kb/HT5219, question 29
Has anyone found that running Windows 8.1 in BootCamp on a MacBook Pro Retina mid 2012 will display via a thunderbolt cable in to Target Display Mode on a late 2013 IMac 27"?
I don't want to go to the trouble of installing Windows 8.1 and trashing my otherwise functional Windows 7 Boot Camp installation unless it is going to display properly on my late 2013 27" IMac running OSX 10.9.3 via thunderbolt.
Thanks in advance!

no, tdm doesn't work under bootcamp regardless of which windows is being used, imho i don't think it will ever work under bootcamp

How do I get Windows 7 to display in Target Display Mode on IMac

I am increasingly frustrated by my inbability to get my Mac Mini running Windows 7 to display on my late 2013 27" IMac using Target Display mode.
My setup:
1. IMac 27" Late 2013 running OSX 10.9.2 with all the latest drivers as of Mar 7, 2014.
2. Mac Mini Server Mid 2011 running Windows 7 SP1, 64bit, all the latest Windows drivers as of 3/7/14, using the latest BootCamp Drivers for this machine, ver 5.1 downloaded 3/5/14 to this machine using Boot Camp utilities in its OSX mode.
3. Connected via Apple Thunderbolt cable.
My process is as follows:
a. Turn on the IMac, boot up in the normal manner, preparing it to run in Target Disk Mode in OSX.
b. Turn on the MacMini boot up via BootCamp, in the normal manner in to Windows 7.
c. When Both machines are on and connected via their Thunderbolt ports, I enter cmd-F2 on the IMac keyboard to enter Target Disk Mode.
Nothing happens.
I use this IMac to display my MacBook Pro in OSX, so I know it is working, but I can't see where the problem is.
I have reviewed all of the Apple support information and followed it explicitly, to no avail.
When I have called the Apple support team, I get little help, they assert that they can't troubleshoot because it is not all Apple hardware/software (everything including the Thunderbolt cable is Apple except for the Windows OS)
Any suggestions will be welcome...
Thanks!

I have finally achieved some clarity on how Target Display Mode works, or rather doesn't work.
And I have been mistaken in some of my prior comments.
Target Display Mode is a function of the host machine, at this point only the IMacs. And it is only available when the host machine is running OSX.
But the most recent Thunderbolt versions of the IMac have been significantly dumbed down in this functionality.
The prior generation of IMacs whose video was supported through the Mini Display Port supported almost any input from a Mini Display Port compliant Computer through the use of various mechanical adapters, and certainly from any Mac Hardware or software combination. It was a very versatile setup, and the IMac in this manner could serve as an absoloutely beautiful monitor for a wide variety of hardware/software combinations.
When the current version of the IMac was deployed using the Thunderbolt ports for input for external video, we apparently left a world of standards based video input and entered the world of Apple proprietary video.
The current model of IMacs with thunderbolt video have a very limited functionality in Target Display Mode compared to those of us who have used it previously. and it only functions when the client machine is running OSX.
No other video input from any source will display.
I am not quite clear on the reasons one would want to display OSX on an OSX native machine, but you can do it. I guess MacBook Pro or Air running OSX will now display on the IMac if that is your need.
Likely the most likely need for Target Display Mode for the rest of us is to run Windows on an external machine and display the video on the IMac, as we have been able to do with the prior generations of IMacs for several years now.
Apple has been unwilling to distribute the technical specifications of its video input requirements in Target Display Mode, (other than to assert it requires OSX), and these technical specifications appear to be proprietary.
I have personally unsuccessfully tried to display the output from both Windows 7 and a Windows 8 machines running from a Windows thunderbolt port into a thunderbolt port on a current model IMac using Target Display Mode.
Unfortunately, there are still a few applications that won't work in Mac world and require a native Windows machine. My current need is to run Dragon Naturally Speaking via Citrix to a remote Citrix server and a Windows app. Parallels and VMWare Fusion do not work, nor does the OSX version of Dragon Dictate function via Citrix. So I am stuck.
I hope that Apple, so long a leader in technology, will restore the functionality it abandoned when it embraced thunderbolt as its only video iniput in Target Display Mode.
Thanks!

Blurry fonts in iMac in Target Display Mode

When I connect Macbook Pro retina with iMac using Thunderbolt to Thunderbolt cable, and use iMac in Target Display Mode the text and fonts are really blurry.
It is the same text in Macbook:
Text in iMac:
The resolution of iMac display is "Best for display", however, I have tried to change it without any success.
Does anyone has similar problem or anyone knows how to fix it? Thanks in advance!

I have found an interesting regularity. If I open window (let's say PDF file) in Macbook Pro and drag it to iMac, then everything is okey. Unless I resize it. Once I resize it, it becomes blurry/smooth again.
Why had this problem and how to fix it?
Changing the resolution in Macbook Pro can help, but 1) I need to change the resolution in Macbook every time when I connect external monitor 2) I cannot resize windows in iMac 3) if I change resolution in Macbook Pro items become really small, so it is hard to see something.
Please help!
OS: OS X Yosemite 10.10
Macbook: MacBook Pro (Retina, late 2013)

Target Display Mode - Connecting pre-Thunderbolt Macbook Air to Thunderbolt iMac.

I want to use Target Display Mode in order to display my late-2010 Macbook Air (pre-Thunderbolt) to a Thunderbolt-based iMac. Is there an adapter solution to connect, say, a mini display port + USB port on the MB Air to the iMac Thunderbolt port, such that TDM would work?

Depends upon the situation. Take a look at this blog:
http://blog.macsales.com/10899-target-display-mode-and-thunderbolt

Use iMac in Target Display Mode with a Power Mac G4

I would like to connect my Power Mac G4 MDD (Model = http://support.apple.com/kb/SP63) to the new iMac (27 inch, Mid 2010) in Target Display Mode. That is, I want the new iMac to be the display for my Power Mac G4. Has anybody done this (including using the iMac 27 inch, Late 2009, which can also do this)? In a general sort of way, this sort of thing is described on this support page: http://support.apple.com/kb/ht3924.
The problem: The iMac requires a Mini Displayport connection. The PowerMac has ADC and DVI-I display connections and also came with an adapter for converting DVI-I to VGA. How can I convert/adapt to get the appropriate Mini Displayport connection?
Gefen makes a converter (http://www.gefen.com/kvm/dproduct.jsp?prod_id=8913) that will convert DVI-D to Mini Displayport, but the description explicitly says that it will work with DVI-D only while my PowerMac has DVI-I. I know that these are two different, incompatible connections.
Is there another converter that works with DVI-I? Or is there a way to adapt from DVI-I to DVI-D? Or how about a VGA or ADC to Mini Displayport converter?
Thanks.

japamac-
Thanks so much for your reply. You're right on target for what I'm looking for and that article is VERY helpful! If you don't mind, I do have a couple more questions/clarifications.
1) First, I think that I didn't read the Wikipedia reference concerning DVI (http://en.wikipedia.org/wiki/DigitalVisualInterface) closely enough. It includes the following paragraph. If I understand it and what you said, it shouldn't be a problem to connect the male DVI-D of the converter into the female DVI-I socket of my Power Mac. Right?
+The long flat pin on a DVI-I connector is wider than the same pin on a DVI-D connector, so it is not possible to connect a male DVI-I to a female DVI-D by removing the 4 analog pins. It is possible, however, to connect a male DVI-D cable to a female DVI-I connector. Many flat panel LCD monitors have only the DVI-D connection so that a DVI-D male to DVI-D male cable will suffice when connecting the monitor to a computer's DVI-I female connector.+
2) I'm not clear on the difference between the Altona AT-DP200 and the Gefen converter. The Gefen converter is somewhat less expensive, so I'm trying to figure out what the downside is. The article you mentioned says that the ATP-DP200 "doesn't scale images", but that seems to only be an issue if I'm trying to connect other devices (PS3, Blu-ray), not if I just want to connect my Power Mac.
The description of the Gefen converter includes the following drawbacks:
+The only major drawback to Gefen's solution is no support for VGA devices or HDCP. A minor gripe would be the fact that the Gefen device only accepts one input resolution and only outputs one resolution (1920 x 1200 at 60 Hz). These limited options aside, the Gefen device looks like it could do the basic trick of transforming a DVI signal to Mini DisplayPort so that you could use your 27" iMac for a few more purposes, provided that the input signal carries the required 1920 x 1200 resolution.+
I'm not clear on what the practical impact of those limitations would be. I don't think the the lack of support for VGA devices or HDCP is an issue for my application. But I'm wondering about the statement that it only accepts one input resolution and outputs only one resolution (1920 x 1200) and the need for the input signal to carry 1920 x 1200. I take it, first of all, that the Power Mac can supply that input resolution. And, what is the impact of the device only having that resolution output to the iMac screen? That is, how would that look on the screen, ugly or okay? Finally, would the Altona device provide a better looking output on the iMac screen because it can apparently handle different resolutions? The manufacturer's description says, "Resolutions: all resolutions up to 1920x1200 (It is Important to select one of the resolutions that display
is capable of displaying, refer to your display’s users manual)."
Thanks again.

15 inch early 2011 Macbook Pro to Mid 2010 27 inch Imac Target Display Mode

Hi Guys
I have a early 2011 15" Macbook Pro with thunderpolt port aswell
as a Mid 2010 27" iMac with MiniDisplay port.
I am trying to use the iMac as a second screen for my Macbook.
Both has Mountain Lion on them.
I have both Thunderbolt to Thunderbolt aswell as miniDisplay to MiniDisplay
cables.
I can't get target display mode to work.
The thunderbolt cable doesn't work at all.
The MiniDisplay does seeem to work to an extend but not completeley.
When i plug in the MiniDisplayPort cable to both machines then
the Macbook pro screen becomes blue which means secondary monitor detected.
iMac screen becomes blank. Sometimes i have enough time to see in system preferences that
the Macbook pro actually has a secondary monitor.
But just as it turned blue on the Macbook pro and black on the iMac. It turns blue again
and the iMac returns to it's Desktop.
The exact same happens when i Press Command + F2 on iMac keyboard.
Any help or ideas?

I have a 13"macbook air and a Dec. 2012 iMac 27". Out of the blue it stopped working in Target Display Mode. Switching cables doesn't help, and the iMac and MBair are connect to power. I can see the iMac screen in Share Screen mode on the MB air.
This seems to be an issue, I have encountered eg. in MacRumours:
Jan 11, 2013, 10:17 AM
#5
martinm0
macrumors 6502
Join Date: Feb 2010
I have the same issue with my 2012 27" iMac (3.4, 680MX). When I initiate Target Display mode the iMac goes black and never comes back up. On the laptop I can see the display in Display Preferences, but its as if the backlight doesn't come on in TD mode. (I even did screen sharing into the laptop and can see both displays there.
Anyway, called Apple and they determined its an issue and I have to send in for a replacement.
Anyone else with a 2012 iMac (21.5 or 27), can you please test out Target Display mode and let us know if things are working or not?

No sound on iMac in target display mode

I've got a late 2009 27" iMac running Yosemite.
When I connect either my MBP (Yosemite, late 2011 15") or my wife's rMBP (Mavericks, 2012 15") to the iMac using a mini Display Port cable and switch the iMac to target display mode using Cmd-F2, sound no longer works.
Previously, when the iMac was running Mavericks, the laptops would route sound to the iMac via HDMI audio (I think) on the mDP cable and sound would be output via the iMac speakers or headphones attached to the iMac. Since upgrading the iMac to Yosemite, sound no longer plays.
This occurs regardless of the laptop OS, Mavericks or Yosemite. The sound icon on the laptop get greyed out and shows that it is going to the "Color LCD" but no sound is output via the iMac.
Any thoughts?
Thanks

Humm... I might go TosLink between the iMac and the FastTrack and then run the USB connection to the MacBook Pro when your using it in Target Display Mode.
Or vise Versa, leave the USB connected to the iMac and use the TosLink connection for the MacBook Pro.
See > NewerTech CBLAOPTMT Toslink to Mini Toslink Optical... in stock at OWC

Brightness iMac in target display mode: who has it working in 10.6.8?

"With Target Display mode, you can use your iMac (27-inch, Mid 2010) or iMac (27-inch, Late 2009) with Mac OS X as an external display.": http://support.apple.com/kb/ht3924 . "Use the keyboard of the 27-inch iMac to adjust display brightness and sound volume and to control media playback of applications running on the 27-inch iMac in Target Display mode."
This used to work perfectly for me. But under 10.6.8, the brightness control stopped working. Sound and media control still work as expected. I posted before on this.
Now I know more people are experiencing this problem... I am looking for people who DO have it working under 10.6.8!
I'm looking for anything I can do to get it to work, maybe the info from people who have it working gives me some clues.
Lion is just around the corner. Please let me know if Lion fixes this problem for you.
Thanks!
Maarten

I'm using two 27" imacs and one of them is still on 10.6.8 one has been upgraded to Lion just now.
I thought it was the Lion update which caused this issue for me because I installed 10.6.8 on both of them today as well.
Now I can't adjust the brightness in target display mode on either 27" imac.... worse that that it sets it to full brightness too.
I don't know of I want to try to go back to before 10.6.8 with time machine, talk about gutted ?
can you use monitor calibration as a work around ?
I found TS3919 but it doesn't work BTW , it says to set the brigthness before entering target display mode..
Simon

Target Display Mode on late 2013 27" iMac to mid 2010 27" Imac

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