OS X Yosemite :: Use IMac As External Display (since It Does Not Support Target Display Mode)?

Dec 1, 2014

I have a new 27" iMac retina display. Is there any way to use it as an external display (since it does not support Target Display Mode)?

Info:
iMac with Retina 5K display, OS X Yosemite 10.10.1

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IMac :: FYI 21.5" Does NOT Support Target Display Mode

Nov 8, 2009

Only the 27" iMac supports this feature. I'm seeing a lot of incorrect info thrown around the forums.

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Intel Mac :: External Monitor In Target Display Mode Won't Wake Up

Mar 26, 2012

I'm using 2 IMac 27' and one is simply used as an external display. When I wake up the computer from sleep, it works on the main monitor, however the external display still has a black screen. I have to unplug the external monitor to get it to wake up.I tried unplugging thunderbolt and replugging it in which worked the first time, but same issue again not waking up.

Info:
iMac

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Intel Mac :: Target Display Mode Does Not Work With Mini Display-Port Cable

Mar 5, 2012

I want to buy the 27" iMac - but only if I can use it as external monitor for my Lenovo laptop when working from home. A the Apple store in London they said that this is possible with a Belkin converter from hdmi to mini display port (with a USB power caple to turn it into an active signal). The laptop also has a displayport.

Info:
iMac

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IMac :: Unable To Use Target Display Mode

Dec 16, 2009

So I have a Mac mini set up with Windows 7 only and then I have that connected to a 27" iMac with the miniDP cable.

At first, during installation, I have no issues; Windows is installed and drivers are done... reboot.

I start seeing artifacts, especially in dark areas (little sparkling pixels of colors--kind of like white noise except it's not everywhere and this is in color), also every few seconds the screen would flicker, and occasionally the screen would change to where the bottom of the be on top (hard to explain, but imagine a movie where the frame isn't centered and you can see the bottom of the previous frame and the top of the current one).

I figured it was an issue with the iMac, so I switched back to the iMac and there are no issues. I switch back to the Mac mini and screen is still messed up.

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IMac :: Target Display Mode Not Functioning With AV360

Oct 23, 2010

I use a Belkin AV360 so I can play my Xbox 360 on my new 27" iMac using target display mode. it has been working flawlessly since I got the AV360 until today where I haven't been able to get target display mode to work.

I've checked it is not the Xbox 360 being the problem tested it on my housemates TV. am also pretty sure it's not the Belkin AV360 itself because in system profiler under USB devices it says the "AV360 miniDP Converter" is pluged in and say same in Windows 7 bootcamp under device manager. I also tried my laptop which has a HDMI out on it.

my laptop says there is a "Belkin dongle" plugged in, I set the laptop to use the Belkin dongle at a external display and still I can't get target display mode to work.

Normally when I turn my Xbox on it automatically goes into target display mode or I can press cmd + F2 so to switch between iMac and Xbox. I have also tested my housemates Xbox in my setup and still the same problem.

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IMac :: How To Use 27" Target Display Mode Connection

Dec 27, 2010

I am thinking about using my iMac as an external display for my Dell Laptop listed in my sig. Most of the time at home I can work on my iMac, but occasionally I use windows, and I have the dell for that. According to Apple:

"On the 27-inch iMac, the same port offers input, too. So you can connect any external source that has DisplayPort output � including a MacBook or MacBook Pro � and use your iMac as a display."

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IMac :: 27" Target Display Mode - More Info?

Oct 21, 2009

I just saw this new thing TDM, and I'm really interested, meaning I can hook up my MacBook to it and all sorts of other stuff. I've been trying to find more info on apple's site and google but there's nothing much mentioned.

Can anyone tell me what kind of cable is required? Will it eventually need like 10 adapter heads?

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IMac :: Target Display Mode Stopped Working With MBP

Aug 3, 2010

I have a November 2009 27'' i5 iMac and a 2010 Macbook Pro 15'' i7. After installing the iMac's Target Display Update 1.0 and 10.6.4, I'm no longer able to connect the MBP to my iMac. When I plug in my mini displayport cable, the iMac's screen goes black for a few seconds, then the MBP's screen flashes blue for a second or two, and then back to normal, and finally, the iMac's screen goes blue for 5 seconds or so, and then back to the desktop.

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IMac (Intel) :: Target Display Mode Won't Work

Jun 5, 2014

Target Display Mode display mode won't work with my imac 21.5" mid 2011. I tried both commands cmd+f2 and cmd+fn+f2 but nothing! I'm using thunderbolt cable to connect my macbook air. Why I'm can't use my imac as external monitor?

Info:
OS X Mavericks (10.9)

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MacBook Pro :: Can Use Target Display Mode After Booting In Restore Mode?

Jun 2, 2014

Troubleshooting a broken display on a 13MBP with OSX Lion. Target is 2011 27' iMac running Mavericks.

Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.3), Office for Mac

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MacBook Pro :: Finding Target Display Mode

Nov 1, 2009

Any chance of a Target Display Mode as seen in the new iMac for the MBP? Is this a hardware or software thing?

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Intel Mac :: Enabling Target Display Mode?

Jul 5, 2012

I am running a new 27" iMac and a MBP 17", both running 10.7.4. Both have Thunderbolt ports. I bought a thunderbolt cable and wish to use the iMac as an external screen for the MBP - Target Display Mode. I have connected both togther via the thunderbolt cable and used Cmd-F2, but nothing. System Information identifies the Thunderbolt ports (2 on the iMac) and nots No Devices Connected. 

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OS X Mavericks :: Target Display Mode Not Working

Dec 3, 2014

I have a 21.5' iMac (Mid 2011) and a 27' iMac (late 2012) that I would love be able to use Target Display Mode. Unfortunately I have tried everything I could think of to get it to work. Here is a list of things that I have tried but have been unsuccessful at enable TDM: 

1.) Completely restored Mac OS X 10.9.5 on the 21.5' iMac. Setting this machine up as new since it will be my external display.

2.) No firmware password enabled

3.) Reset PRAM on both machines

4.) Connected an Apple Keyboard w/ numeric keypad to the 21.5' iMac.

5.) Pressed CMD+F2 to enable TDM (no luck)

6.) Tried to enable 27' iMac as external display  

Repeated same process with an 13in Macbook Air (Mid 2011) and got the same result. TDM will not work. 

So I did some extra troubleshooting to try to target why TDM won't work.

I put my 21.5' iMac in target disk mode and connected it via thunderbolt with my 27' iMac but it doesn't see the 21.5' iMac while in target disk mode. I also tried the same process with my 13' MBA and I don't see the 21.5' iMac while in target disk mode.

Info:
iMac, OS X Mavericks (10.9.5)

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Intel Mac :: Cannot Enable Thunderbolt Target Display Mode

May 13, 2012

I have a new 3.4 GHz Thunderbolt iMac and can't get Thunderbolt Target Display Mode to work with my current-model 13" MacBook Air or the current model 15" MacBook Pro furnished to me by my employer. Cmd-F2 just creates a beeping sound.I tried three different Thunderbolt cables. (They are not Mini DisplayPort cables. I have one of those from a previous model of iMac and it both looks different from the Thunderbolt cables and System Information doesn't show any change when I try to patch the computers together using it.)

All machines are fully updated to MacOS X 10.7.4 with all firmware updates applied.System Information shows that all are equipped with Thunderbolt interfaces; the Console app shows the kernel message indicating when the Thunderbolt devices are plugged in and removed; all three machines work in Thunderbolt Target Disk mode in both directions with all three cables with both Thunderbolt interfaces on the iMac.

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MacBook Pro :: Thunderbolt Target Disk Mode Via Cinema Display?

May 22, 2012

My MacBook Pro does not have Thunderbolt. 

Could it be connected to a Thunderbolt Cinema display to run via target disk mode to a thunderbolt MacBook Air? 

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IMac (Intel) :: Can External Display Be Rotated Into Portrait Mode

Nov 30, 2014

I was told that the new 5k imac can support one external 4k display via thunderbolt, but the 5k imac cannot itself be rotated into portrait mode (on a vesa mount for example). If I connect an external 4k display via thunderbolt to the new 5k imac, can the external display be rotated into portrait mode so I can have 3840 pixels vertically on the 4k display?

Info:
iMac with Retina 5K display, OS X Yosemite (10.10)

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MacBook Pro :: Use Computer In Closed Clam-shell (display Closed) Mode With An External Display?

Jun 4, 2012

I have an 13" MBP that I ordered new in April, 2012. It is running Lion. I have an external monitor that is capable of 1440x900 resolution. I have an external keyboard and trackpad hooked up, and I like to close my MBP up and stick it in a BookArc. I want to be able to have the internal display disabled and to have the MBP only allow me to put windows on the external display, so long as the lid is closed. I also want to be sure that I am taking advantage of the resolutions available on my external monitor, which are higher than those supported by the internal display (specifically 1440x900). 

This doesn't seem to work because I either have to allow the MBP to continue to draw my desktop across both screens (internal and external), OR use the "mirror displays" mode, which restricts my resolution of my external monitor. This means I either forgoe the additional resolution benefits of my external monitor, or I end up with windows that fall off-the-cliff, so to speak, because they are drawn in the portion of the desktop that would be shown on my internal display (which is closed). 

I've read the community support pages on using the MBP with an external monitor, most relevantly, this page. It simply recommends using the "mirror displays" option. However, this option, as I mentioned above, doesn't allow me to make use of the additional resolution, and my external display looks bad. how to keep the 13" MBP in closed clamshell position, with the internal display disabled, and use my external monitor at resolutions higher than those allowed by the 13" MBP but which are available to my external monitor when not in "mirror displays" mode?

Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3), External display (1440x900)

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MacBook Pro :: Use Computer In Closed Clamshell (display Closed) Mode With An External Display?

Jun 24, 2012

I am wondering that is it essential to connect power adaptor all the time while operating in closed calmshell mode? When I unpluged the cable it didn't work. Is there some way?

Info:
MacBook Pro, iOS 5.1.1

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PowerPC :: IBook Display Stopped Working / Boot IBook Via Target Disk Mode?

Aug 13, 2010

I have a G3 iBook and just the other day the display stopped working. There were no signs of the display going bad, it's just went. Am I able to boot the iBook via Target Disk Mode on my PowerBook and run the iBook Hardware Test CD on it? Also, can I reboot my PowerBook and choose the iBook as the startup volume?

I know how to do Target Disk Mode but the latter I'm not sure about.

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IMac :: How To Keep Display Sleeping While Keeping External Display Active?

Jan 23, 2008

Just wondering if anyone could help me figure this out.

I have my 40" flat screen plugged into my imac via VGA cable to mirror the image.

I'm just trying to have the imac display sleep while I play a movie full screen through the external TV.

I've tried two different ways but both have failed.

1-I set up a hot corner in the imac to sleep display but this results in both the display and the TV sleeping.

2-I just set the power settings to sleep after 1 minute. This works but then If a movie is playing the computer won't go to sleep.

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MacBook Pro :: 13" Target Display To IMac - Black Screen?

Apr 26, 2012

I have a MacBook Pro (13'', Early 2011) & iMac (21.5", Mid 2011) using a Thunderbolt Cable to Target Display. Everything was working find and I could Command F2 to Target Display as expected.However, about a week about this stopped working. Now when I try to Target Display the iMac goes to a Black screen (like it's switching to Target Display) and the MacBook Pro does nothing. The iMac will be at the Black screen until I Command F2 again (or disconnect the Thunderbolt Cable), then the iMac goes back to the normal display. I have tried another Thunderbolt cable with no luck. I have perform all software updates on both machines (now both running 10.7.3) and fixed Disk Permissions. I have also found that restarting my MacBook Pro allows this to function as excepected (Command F2, Blue Flashing Screen, Target Display on the iMac). However, this is not an ideal situation since having to restart my computer is time consuming.  

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Hardware :: Disable IMac Display/use External Display Only?

Jan 13, 2010

I just purchased a 23" monitor to replace my iMacs 17" display (since it has a nasty crack in one of the corners). I hooked it up fine and all, but the displays are linked, allowing me to hover the mouse to the iMac's display which I find annoying most of the time.

Is there a way to make the iMac display zone out and just use the external by itself?

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MacBook Air :: Max Resolution Support For External Display?

Jul 28, 2010

I have an 28 inch Dell LCD screen that has a native resolution of 1920x1200. Does the MBA support that resolution through the Mini DisplayPort? The specs on the Apple website list the following:
"Supported resolutions: 1280 by 800 (native), 1152 by 720, 1024 by 640, and 800 by 500 pixels at 16:10 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio; 720 by 480 pixels at 3:2 aspect ratio". But I read that the MBA can also do higher res.

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IMac :: Turn Off The Display When Using An External Display?

Nov 10, 2009

I'm interested in the new iMac but could not work with a glossy display. Can anyone share their experiences of using the iMac with an external display? In one respect it seems like a waste to have two monitors but the base model costs little more than the maxed out Mini and seems like the better option.

I would be interested in seeing photos of any setups featuring the iMac and an external display.

Also, is there a way to turn off the iMac display when using an external display?

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MacBook Pro :: Necessary To Remove External Display In Sleep Mode?

Jun 11, 2010

I have just seen another thread here which links to the following Apple KB article about running in clamshell mode. [URL]. It says something about putting your laptop to sleep before removing the external monitor. I am not running in clamshell mode but I have a dual screen setup using a Mini DisplayPort to VGA adapter. When I take my MBP (2010 - see sig) off my desk, do I need to put it to sleep to remove the Mini DisplayPort connector, and, if so, does anyone know why this is necessary?

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OS X Yosemite :: How To Make Display Narrower With 4K Display

Dec 2, 2014

This is a Mac Pro 2013.  It runs Yosemite 10.10.1.  I have a Panasonic 4K TV connected to it, running at 3840 x 2025 @ 24 Hz.  This Panasonic does not display the left and right inch or so of the screen image. 

Looking at this, the Mac Pro 2013 version of a 4K image is 4096 x 2160 pixels, which is 256 pixels wider than this Panasonic screen and might just account for the problem I am seeing. How can I reduce the output on the Mac so that it nicely fits onto the pixels of the Panasonic screen?  After all this used to happen very easily with my 1920 x 1080 previous monitor.

Info:
Mac Pro, OS X Yosemite (10.10.1), with Epson Stylus Photo P50 printer

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IMac :: Display Mode - Connect Win7 PC Tower To 27"

Apr 19, 2010

Basically I want to connect my Win7 PC tower to my 27" iMac. After doing some research, is it true that only the ATI 4890 and ATI 5970 are the only video cards that have worked in the past? The newer 5870 Eyefinity 6 just got released and seems to be a bit cheaper than the 5970, seems to be untested still. Has anyone got this to work with the cheaper ATI cards with displayport? I don't want to spend more than $600 for this new venture.

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MacBook Pro :: External Display Is Not Waking / Retina Display Flashes Through Different Screen Views

Sep 4, 2014

My external display (HP w2207) seems to conflict with my MacBook Pro (15 inch Retina display, early 2013) since I upgraded MacBook OS to 10.9.4.The external display works at initial boot of Mac but does not work after OS sleeps and I attempt to awaken, and while the external display is not waking, the Retina display flashes through different screen views, which only partially reflect my normal screen, or do not reflect my normal screen at all. 

Info:
OS X Mavericks (10.9.4)

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PowerPC :: Powerbook Internal Display Won't Turn On With External Display

May 22, 2007

For the past few months i have been using an external display hooked up to my 12" powerbook g4. I have had it on a dual display mode so no mirroring. Recently i would open the laptop lid waking it from being in sleep mode and my internal display will not turn on. The apply system profiler does not even recognize that the internal display exists. My external display works fine and has always been set as the main display. If i go to detect displays nothign happens. I have tried restarting the computer, instering system disks, unplugging the external and nothing has worked. I simply cannot get my internal screen to fire back up. When i used to unplug my external display the internal display would switch back to being the main display and everything would be fine. Now i cannot get the internal display to function whatsoever. Please try and help me as a need this laptop working and i will be ordering a mac pro soon for use with my external display.

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