HT3924 Target Display mode screen direction

Can anyone advise on how to change the direction of screen link whilst in Target Display mode? My lap top sits to the right of my iMac due to the length of Thunderbolt. Screen link goes from right of laptop to left of iMac, would like to swap to left mode onto right side of scrren on my imac.

Welcome to Apple Support Communities
You can change the extended desktop behaviour in System Preferences > Displays > Arrangement. See > http://support.apple.com/kb/ht5019

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HT3924 Target display mode connects but only displays desktop background, no files or command lines

I have connected my early 2014 MacBook to a late 2012 imac and connected them via Thunderbolt cable. Pressing Command F2 causes the screen on teh iMac to change to teh MacBook background screen, but does not display any desktop files or command lines. Any ideas how to fix this?

Hi tdmone,
Welcome to the Support Communities! The resource below may help you with the Target Display Mode options for connecting your Macbook and iMac:
Target Display Mode: Frequently Asked Questions (FAQ) - Apple Support
http://support.apple.com/en-us/HT3924
The table below shows iMac computers that support TDM, the required cables, and the port of the computer to which you are connecting the iMac.
iMac Model
Cable Supported
Port on Source Computer
iMac (27-inch Late 2009)
Mini DisplayPort to Mini DisplayPort
Mini DisplayPort or Thunderbolt
iMac (27-inch Mid 2010)
Mini DisplayPort to Mini DisplayPort
Mini DisplayPort or Thunderbolt
iMac (Mid 2011)
Thunderbolt to Thunderbolt
Thunderbolt
iMac (Mid 2012 and later)
Thunderbolt to Thunderbolt
Thunderbolt
Are you connecting via the Thunderbolt ports on both computers?
How do I enable TDM?
Make sure both computers are turned on and awake.
Connect a male-to-male Mini DisplayPort or ThunderBolt cable to each computer.
Press Command-F2 on the keyboard of the iMac being used as a display to enable TDM.
Note: In Keyboard System Preferences, if the checkbox is enabled for "Use all F1, F2, etc. keys as standard functions keys," the key combination changes to Command-Fn-F2.
Can I use a third-party keyboard or older Apple keyboard to enable TDM?
Some older Apple keyboards and keyboards not made by Apple may not allow Command-F2 to toggle display modes. You should use an aluminum wired or wireless Apple keyboard to toggle TDM on and off.
I hope this information helps ....
- Judy

TS3775 Hi I am trying to connect my mba mid 2011 with an imac 27" 2011 with target display mode tdm. When I am using a thunderbolt cable nothing will work. When I use a minidisplay cable, both screens turn blue but eventually nothing happens. What is the

Hi I am trying to connect my mba mid 2011 with an imac 27" 2011 with target display mode tdm. When I am using a thunderbolt cable nothing will work. When I use a minidisplay cable, both screens turn blue but eventually nothing happens. What is the problem

Your answer is likely in Target Display Mode: Frequently Asked Questions (FAQ) - Apple Support If you are familiar with this document, please re-read it and I suspect you may find something you either missed or are doing incorrectly.

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

HT3924 can i use iMac keyboard and mouse when it is in Target Display Mode and attached to my MBP?

I can attach my iMac to my MBP via thunderbolt and run it in Target Display Mode, so that itsimply becomes a screen attached to my MBP.
What I really want is for the keyboard and mouse of my iMac to also operate as if they were attached to my MBP, but I cant seem to achieve this.
Is it possible?

Its a wireless mouse and keyboard - dont think I can re-pair the keyboard to MBP since I need it talking to the iMac to enable and disable TDM?
I expected TDM to natively pass through the mouse and keyboard to the MBP, since that is the obvious user requirement. But this does not happen.
So I guess I want a workaround so my iMac keyboard and mouse can drive my MBP while attached via Thunderbolt cable in TDM mode.

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.

Bug: Target Display Mode + optical audio cable = black screen

Using Target Display Mode on my iMac 27" (late-2012) with my MacBook Air (mid-2013) always resulted in a black screen on the iMac.
Hardware used:
MacBook Air mid-2013 (Mac OS X 10.8.4)
iMac 27" late-2012 (Mac OS X 10.8.4)
Thunderbolt cable between MBA and iMac
optical audio cable in iMac (digital audio out through optical mini jack plug)
Now, enter Target Display Mode on the iMac keyboard (Cmd+F2).
Result: black screen on the iMac (MBA is okay, optical audio is okay)
Workaround: unplug optical audio cable before entering Target Display Mode. Plug in the optical digital audio out cable after TDM is working and all is fine.
I sent a bug report through the feedback form. Just posting here to save others the few hours I had to spend finding the cause and workaround!
-- Richard

Thank you!! Saved me a trip to the Genius Bar.
Confirmed: Bug also exists in the new 2013 iMac under Mavericks. Unplugging the optical cable before entering Target Display Mode solved the problem.

HT3924 any HDMI converters available for iMac target display mode yet?

Just got this bed with a pop-out TV, and I'm thinking about getting an iMac 27" to use instead of a TV. Problem is, I'll also want to attach an Apple TV or Freeview box to my iMac - so I can play content from my iPad / watch live TV from the freeview box. This would be technically possible with target display mode, except the Apple TV / Freeview box don't have mini display port output.
Anyone know if there are HDMI to mini display port adapters available yet to facilitate this? From what I've read most of them only output from mini display port to hdmi, not the other way round.

I have a Asus HD6570 2GB Graphics Card in that computer with HDMI out, DVI out, and VGA out. I have a Asus HD6570 2GB Graphics Card in that computer with HDMI out, DVI out, and VGA out.
None of those will work.
It has to have a Mini DisplayPort, not evn a Display port will work.
ScreenRecycler...
http://www.screenrecycler.com/ScreenRecycler.html

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)

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.

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.

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

Apple Mini DVI to DVI Adapter to connect Win7 tower to iMac / Target Display Mode

I currently run Windows on bootcamp on the iMac (Mid-2011), although the tasks I perform (3D modelling, rendering and such) cause the Mac to get very hot, and as a result hae a slight burn mark on the LED LCD screen.
I am buying a Windows machine, and am to uninstall bootcamp and use the Mac purely for OSX, but use the iMac screen as a monitor for the tower using Target Display Mode. My issue is - the Windows 7 tower only has DVI output. And as I understand, the Mid-2011 iMac only supports Target Display Mode via a thunderbolt cable.
My question is - Will the Apple Mini DVI to DVI adapter allow me to connect the DVI-only tower to the iMac? Thanks in advance x

Oh, I should mention also that the iMac is the 27" model. Mid-2011 3.4Ghz Intel Core i7 with 4GB RAM and 1TB Harddrive. And ATI HD5450 1GB Graphics.

How can I use my 27" iMac (2010) as an additional display to my Windows 7 PC (target display mode)?

So I have purchased a windows machines so that I can play all my favourite games on, and it's not so much a problem rather I have a 27" iMac that I would like to use as an additional monitor for said games.
I have had a look at this article on using the iMac as a display for another computer and things looked promising. I think I need a bit of help getting there though as I can't find definitively anything online to tell me exactly what I need. Most stuff talks about connecting other Apple computers that have mini display ports.
My PC's video card is an nVidia Geforce GTX 650 Ti that sports 2 DVI ports and a mini HDMI port (adaptor to full HDMI was included). The iMac has a mini display port. I went out and got a HDMI cable and Moshi Mini DisplayPort to HDMI Adapter (with audio) to try to use the iMac as the additional display. I connected the PC with [a generic] HDMI cable to the adaptor which ran to the iMac and went through the appropriate steps (ie. pressing CMD + F2) to initiate target display mode. Nothing happened.
I have read that other people with different situations tried an SMC reset, but this didn't work for me either.
At this stage I wanted to see if the DVI port would do anything, or perhaps looking at a particular kind of HDMI cable, but wanted to see what the community can offer up as advice.
Any assistance would be greatly appreciated.
Thank you.

Hi,
have a read here http://support.apple.com/kb/HT3924
Regards
Stefan

IMac 27" Target DIsplay Mode + Answer to Windows 7 Boot Camp Install

First, I'd like to address the handful of complaints I've come across about installing Windows 7 via Boot Camp on the new 27"iMac.
The issue of the screen going blank when almost done has an easy albeit annoying answer. Simply connect the iMac to an external display, I used a small vga lcd with the Mini DisplayPort to VGA adapter. When the iMac's screen goes black the external lcd will continue, and when Windows 7 starts up it will download the updated ATI drivers. From there alls well.
Second, my problem.
Target Display Mode is a great feature. It worked great when I first used it, and it works great now except for the fact that the Command+F2 button combination stopped working. I have to manually unplug my MacBook Pro in order to get my iMac's original screen up. At first Command+F2 would allow me to switch back and forth, and now it does nothing.
Any suggestions?

Well, the usual first things to try for a display-related issue are
Reset PRAM
http://support.apple.com/kb/HT1379
and of that does not help, reset SMC
http://support.apple.com/kb/HT1543
which is basically unplugging the iMac from power and reconnecting it following the precise procedure.
Note: After resetting PRAM, you should go to System Preferences +Startup Disk+ pane to make sure your internal drive is selected (highlighted) as the startup disk.

HT3924 Target Display mode screen direction

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