I Mac 21 post 2012 don not switch to Target Display Mode

I connec a MiniDisplay to VGA adpter ion the Thunderbolt soket and connect it to a PC.Bur CMD+F2 does not switch my IMac to TDM
Any hint?
Thanks

Sorry but its just not going to work. In order to have TDM work on a 2011-2013 iMac your PC would need a Thunderbolt port that supports video out, chances are extremely slim you PC has that ability.
Please read Apple's FAQ on TDM and they will spell it out for you, you can get it by clicking Target Display Mode: Frequently Asked Questions (FAQ)

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How to switch to Target Display Mode under BootCamp?

Hi there,
I am running Windows 7 x64 under bootcamp and want to be able to switch to target display mode.
I can achieve this when running OS/X by hitting Command-F2.
Is there a way to switch to target display mode from within Windows 7 under bootcamp?
I would like to do this so that I can easily switch to target display mode whilst using Windows without having to restart my machine.
Any help would be appreciated.
Cheers,
Bardman

Windows does not have a Target Display mode.

Target Display Mode iMac 27 mid 2011 with Mac Mini 2011 bootcamp

Hello,
I can't seem to use Target Display Mode with Bootcamp.
My configuration:
Imac 27" mid 2011 with osx 10.8.4
Mac Mini Server 2011 with osx 10.8.4, bootcamp 5 and Windows7
Both are connected via Apple genuine Thunderbolt cable (2m).
When I boot the Mac Mini into OSX then Target Display Mode works perfectly and I can see the osx installed on the Mac Mini on the iMac display.
However, when I reboot the Mac Mini into Bootcamp (windows7 x64) I can't put the iMac in Targt Display Mode and get to see Windows 7 on my iMac screen.
http://support.apple.com/kb/ht3924#8
The following article says that this should work, however once I reboot osx on the Mac Mini the iMac leaves Target Display Mode immediatly and will not return to Target Display Mode.
Any advice? I contacted Apple Support and a Sr. Enginner said it should be supported and he's checking with a higher tier.
Thanks

Yes, it does.
(110549)

Migration Assistant: Problems transferring data from PC (XP SP3) to new Mac Pro 2012 - can not get Migration Assistant to work as PC will not display verfify passcode

Migration Assistant: Problems transferring data from PC (XP SP3) to new Mac Pro 2012 - can not get Migration Assistant to work as PC will not display verfify passcode
Hello, I am having problems migrating data from my old PC running XP (SP3) to my new Mac Pro 2012 using the Migration Assistant.
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- My Mac is then stuck in "authenticating" loop and the PC is stuck "waiting for Mac to connect."
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I have looked on support site and only response I saw says to reinstall Windows Migration Assistant (which I have done)
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Why not turn off the Windows firewall and uninstall any other firewall software you have installed?
If you are using a Norton product uninstall it and discard it. To fully unistall most Norton products you have to go to the Norton website and download a soecial program to completely get rid of it. The normal uninstall feature built into the program will not remove all of it.

Dec 2012 iMac using bluetooth keyboard will not exit Target Display Mode

Hi! I have a new 27" iMac that I would like to use as a second monitor for my work laptop a late 2011 15" MBP. iMac is on 10.8.3 and Mac Book Pro on 10.7.5. Connected via a thunderbolt cable.
I can toggle on Target Display Mode using the command-F2 keys on my bluetooth keyboard connected to the iMac. If I understand directions correctly, I should use the same keys and keyboard to toggle off – but it doesn't work. I'm able to work around by putting MBP to sleep, which exits the iMac out of TDM.
I can use the work around, but...
1) it's annoying.
2) If I can't use the bluetooth keyboard to toggle, it would be nice to connect it to the MBP for use while in TMD. Unfortunately, the bluetooth keyboard is undiscoverable, presumably because it's still connected to the iMac.
I wonder:
Am I doing something wrong trying to toggle out of TMD using bluetooth keyboard?
or
Is there a way to enter iMac into TMD without using keyboard command? Maybe System Preferences?
Thanks for your help in advance!

Here's the solution: I had the same problem using my 27" iMac as an external display. The issue is, when you go to Target Display mode, your target computer, the iMac 27" locks the screen with your password.
To switch off TDM, type your password in on the iMac keyboard and press the enter key.
Now press COMMAND - F2 and the displays with switch back to two separate displays. :-)
I had to think like a computer to figure that out but it makes sense.
I also have the disappearing mouse pointer and have not figured that one out. I did all the software updates and I did not have this problem until I upgraded to Lion. It is definitely a software issue. I might have to open a case with Apple support. Not happy.
Derrick

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...

No backlight in Target Display Mode on 2012 27" iMac

I am trying to use my new 2012 iMac 27" as an external display for my mid 2011 Mac Mini with Target Display Mode. At first it seems like it's not working when switching as I hit Command + F2 and the screen changes to black. But after shining a flashlight onto the monitor I can see the desktop and dock of my Mac Mini operating system. Mouse control and everything else works, it's just the backlight doesn't light up when connected to the Mac Mini. But hitting Command + F2 again brings it back to the iMac and a normal functioning backlight.
I'm assuming this is a bug in the new iMac because I had a late 2011 iMac 27" (previous generation) hooked up to this same Mac Mini and Target Display Mode worked perfectly between the two. It was even the same exact Thunderbolt cable. I have re-tested the Mac Mini and plugged it into another monitor with a DVI to Mini Display port adapter and it has worked fine. Has anybody else experienced this behavior?

HI - i had this problem too. see my previous post above. I spent weeks on the phone to apple support.
from memory:
1. I had to reinstall the OS (from a download) - but this failed to work
2. So... I had to perform a complete reinstall of the operating system (and wipe all user data)
3. and then restore all my user data.
Everything has worked seamlessly since then - which to me indicates it's a s/w problem and possibly one with something in my user profile? I just reliased I did not try and create a new user and try TDM using that. This would've proved it was a user profile problem or not.. I had one small ocassion where the screen went blank a week ago, but I just quickly pulled the TB cable out and put it back in again - and it was all ok.
So in essence I've been runing OK now since I did the reinstall and restored the user data.
Richard

Target Display Mode: Lenovo T420 DisplayPort to iMac (2nd screen) does not work

Configuration:
- Laptop Lenovo T420, DisplayPort, Windows 8.1
- DisplayPort cable, Adapter to Mini DisplayPort
- iMac (Intel, 27-inch, Mid 2011) as 2nd screen, connected via Mini DisplayPort Adapter, Mavericks OSX 10.9.1
Problem:
- iMac does not start Target Display Mode
- Even cannot be forced via Cmd + F2 or Cmd - Shift - F2
Test:
- Lenovo via DisplayPort cable to 2nd screen works fine
- Can switch between PC only, Duplicate, Extend display
Question:
- What is wrong?
- What can be done to idenify the root cause?
Kind regards, Marcel.

Hello Marcel,
It sounds like you are wanting to use the iMac in Target Display mode with your PC. Target Display mode is a feature that is supported from one Mac to another Mac according to this article:
OS X Mavericks: Use another Mac as a display
http://support.apple.com/kb/PH14264
Target Display Mode lets you use a Mac as the external display for another, “primary” Mac.
Thank you for using Apple Support Communities.
Cheers,
Sterling

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.

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>

MacBook Air to iMac Target Display Mode not working

I would like to connect my MacBook Air (13") with my iMac (27") to use the latter as an external display with Target Display Mode.
I followed instructions from a number of posts (http://support.apple.com/kb/PH14264), and connected the two with thunderbolt cable and hit Command-F2 -- the iMac goes black and MacBook stays the same. One post suggested dragging windows over to the iMac as an extended display, and I was able to drag Safari totally off-screen, presumably onto the other display, but the iMac still appeared black
Other issue is that hitting Command-F2 again doesn't do anything. I could only get the iMac out of TDM when I unplugged the thunderbolt cord.
I have a brand new Macbook Air and iMac along with new thunderbolt cable (all purchased at Apple Store in 2014). Would appreciate any help, thanks!

Additional twist to this...
Tried to troubleshoot and reset the System Management Controller (SMC) per http://support.apple.com/kb/HT3964
When I hit Command-F2, one window from my MacBook will display on the iMac (it was Safari a few times, Outlook once), but neither keyboard/mouse can DO anything in that screen. That window also disappears from the MacBook. And I can only return after unplugging thunderbolt (not command-F2).
Help please

2010 iMac Target Display Mode not working

I'm trying to use my 27" 2010 iMac with OS X 10.7.5 as the display for my Power Mac G4 using Target Display Mode, but command+F2 doesn't do anything. I have it hooked up from the G4 using a DVI -> Mini Displayport adapter into the iMac. I've tried having the G4 plugged into the iMac, shutting both down, booting the G4 first and then the iMac. I've tried repairing my disk permissions on the iMac. I'm using an Apple keyboard and have tried both a wireless and USB keyboard, still no luck. Is what I'm attempting impossible or am I doing something wrong?

Target Display is working on the iMac, but by default, the MacBook Air uses the external display (in this case, the iMac) as an extended display, so you have to drag the windows to the right of the display of your MacBook Air and they will appear on your iMac.
If you want to show the same on both MacBook Air and iMac displays, see "Video mirroring" > http://support.apple.com/kb/HT5019

After target display mode, iPhoto reports an error, "The current screen resolution is not optimal for iPhoto."

I have the 27-inch (late 2009) iMac with mini-Display port input. Whenever I return from Target Display Mode, I get the attached error message and iPhoto becomes unresponsive (the window is still active, but clicking on it produces the error/warning system sound), I have to Force Quit it. The current screen resolution is not optimal for iPhoto (sometimes the error message is a little off the screen in the lower left and only the top of the window can be seen. This also seems to affect iTunes at the same time (by resizing the window to be super small), but without the error message or unresponsiveness.
Has anyone else gotten this problem, and or might know of a fix?

Yes, I have the same problem. I have checked the resolution in Sysyem Preferences - display and it is properly set to the highest resolution (which is recommended). I have no idea why this is ocurring but it is annoying.

IMac g5 will not mount in target disk mode

I am trying to recover data from an iMac G5 with a failing hard drive. The mac recently stopped booting and does not get past the grey startup screen before just turning off. There have been many other cases like this that I have looked at, but I still have not found a solution. I have started up from the install disk and can see that disk utility still regonizes the disk (althought it is marked as failing) but no options for repairing or verifying are available (greyed out). System Profiler on the non-target mac can see the drive (under firewire tab), but I don't know if I can mount it because Disk Utility can not see it. Is there anything I can do to extract the files? Thanks for any help you can offer. Sheldon

If the HD has failed on the old computer then you can either recover from your backup, however I'm assuming from your post you were not backing up. If that is the case then you can purchase Data Rescue 3 (Google it) and see if it can recover some data or you will need to take it to a data recovery service which will be extremely expensive.
As a general rule of thumb ALWAYS ALWAYS ALWAYS have a solid backup plan! Beginning with Leopard 10.5.x there is no excuse to not at least be using Time Machine. If you are not familiar with TM then please watch the Time Machine Tutorial.

Excise Invoice Tab not appeared in MIGO Display mode

Dear All Guru,
we are facing a problem after posting excise invoice,we are not able to see excise invoice tab in MIGO display mode .We are done all necessary patch uploading but there are some ABAP programming change related to MIGO display.
Pls, send necessary note or some clue.
Thanks,
Abhijit

Hi Abhijit,
How you posted the excise invoice, have you done this posting in MIGO transaction or in J1IEX transaction.
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Hope you understand.
rgds
Chidanand

I Mac 21 post 2012 don not switch to Target Display Mode

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