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

Similar Messages

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

TV Out Issue- No display of screen but only the audio sound can be heard

I have alway being using my iPhone 4 to watch my video/ mirroring by connected to TV (Sony) through 30-pin digital AV adapter, but after the upgrade of software to version 6.1.3 (10B329). During TV out, showing no display at screen but only the audio sound can be heard at background. Appreciated if there could be a update to fix this issue.
Thank you
Regards,
Devil38

Thanks you. Problem is solved. The cable wasn't plugged in properly.
In spite of video rendering smoothly, audio started coming only when I disconnected the cable and plugged it in hard.
Perhaps I was pampering my phone too much
-3310
-N80
-N8

Macbook air charges fine with the Thunderbolt screen connection but only sometimes with the 45 W chargers.

My Macbook air charges fine with the Thunderbolt screen connection but only sometimes with the 45 W chargers. It seems to be the combination of the chargers and the computer. I was thinking whether the Thunderbolt screen has a larger power supply which easier activates the computer to actually receive the charge. It reminds me a bit of the Nokia Lumia 800 telephone, which when totally exhausted needs a strong charger to be activated again. I am as frustrated as most others. I have got two chargers, and both of them sometimes work, other times not. Sometimes, they start working after a while. Is Apple meanwhile coming up with a solution or advice how to handle such situation?

I just got my ATD and late 2011 MBP up and running. I've not tried running without the power adapter from the ATD plugged in, but I just tried and didn't have any problems with the display not waking. You may want to take your query to the ATD forum - https://discussions.apple.com/community/peripherals/thunderbolt_display - perhaps someone there has experienced a similar issue.
Good luck,
Clinton

HT204387 When I connect my Iphone 5C to Blue tooth it gets connected but only I can hear incoming voice. The called party cannot hear my voice. may i have the solution please.

I have just bought this expensive phone. I tried connecting to Bluetooth car kit. It gets connected but only incoming voice can be heard. No voice goes out from Iphone.
I also tried connecting to Samsung Bluetooth but the problem is same. There is only in coming communication and no out going.. But both the Blue tooth devices works fine with my Samsung SII.
A working solution help will be very juch appreciated. Thanks in advance.

I'm having the same problem. I had a plantronics 975 (which I lost, sadly). When connected, the ringer would always be routed through the bluetooth and the iPhone's external speaker. When in silent mode, the iPhone would only vibrate, but I could still hear the ringer in the bluetooth.
I just bought a new Plantronics Voyager+. Now when it's connected, all sounds are routed to the earpiece - including the taps, etc. The iPhone's speaker doesn't ring at all, unless the bluetooth is disconnected or powered off. I'd really like to be able to hear both, like I was before. This is an iPhone 3G running iOS 4 (latest version, not sure what it is exactly). Haven't updated software/firmware in between bluetooths, just changed the earpiece.

Mail doesn't display full email text, only displays the subject line

Mail doesn't display full email text, only displays the subject line.
My preview shows first three lines of email, but when I chose the email specifically mail doesn't display any lines of text. Been this way for about ten days. Please help. Ben

Awesome. Rebooting the phone worked. I had never turned the phone off before (for the next guy - you hold down the "sleep" button for longer than you'd think and that'll do a full shutdown). thank you for your help.

Using Mac Pro in Target Disk Mode Connected to MacBook Pro

Hi all,
I am trying to set up two macs to run off of the same monitors/keyboard/mouse/etc. I know about KVMs, but they are too expensive for my current setup.
I want to know if it's possible to run a 2006 Mac Pro in target disk mode connected to a brand new MacBook Pro 13" via a firewire to thunderbolt converter.
I would need to access the files, but also run the applications from the Mac Pro on the MacBook Pro.
Would such a setup work? Would I have to reboot each time I wanted to switch machines? Would there be a significant lag in the Mac Pro's performance?
Any tips or links to articles/etc. would be appreciated.
Thanks,
Nick

Hi Niel,
Thanks for the speedy response.
I should have clarified that I know that I can access the drive like a firewire drive. I'm more curious as to whether I can either:
1. use it's applications in target disk mode (based on your answer -- No, unless all the necessary system components are identical between the two computers).
2. Boot from the Target Disk computer as if it were a separate drive of my main computer. If so, since this is Firewire and not SATA, will I notice a severe loss of processing power?
Nick

I have bought a docking station and my iphone works fine but my ipod mini seems to fit on the connection but only works intermittently. Is it a different connection or is there a problem with the ipod?

I have bought a docking station and my iphone works fine but my ipod mini seems to fit on the connection but only works intermittently. Is it a different connection or is there a problem with the ipod?

I think that is happening is that the microphone is on during this recording. If you play the music through the iPhone speakers, it will record this sound, albeit at very poor quality. If you say anything (or laugh uproariously as I did while watching the app in action, then that, too, get recorded.
I am still looking for the solution we all want, which is to save the audio in reasonable quality.
Anyone out there with some ideas?
Cheers,
Rob

I try to save or delete photos from some SD cards that I use in trail cameras. The cards are unlocked, but only allow me to read files. Also, is it unusual for ad tabs to pop up in Safari every time I click on the tab I am using?

I try to save or delete photos from some SD cards that I use in trail cameras. The cards are unlocked, but only allow me to read files. Also, is it unusual for ad tabs to pop up in Safari every time I click on the tab I am using?

I try to save or delete photos from some SD cards that I use in trail cameras. The cards are unlocked, but only allow me to read files. Also, is it unusual for ad tabs to pop up in Safari every time I click on the tab I am using?

(sqr 2515) input required user interaction but user interaction was disabled by the -XI command line

hi ,
i'm getting below while running sqr in 3-tier mode using process scheduler.
(sqr 2515) input required user interaction but user interaction was disabled by the -XI command line
can any one suggest me to resolve this problem

You should be able to get some more precise information from your Xorg logs, but I would bet it is related to the evdev driver. Some of the options in your xorg.conf no longer work with the latest version. For now you should be able to either map your mouse directly to the appropriate /dev/event* entry or change to the standard mouse driver, both of those methods should be in the wiki.
You are supposed to be able to use the evdev driver without the input section of your xorg.conf by using dbus/hal autodetection, but AFAIK at the moment the xorg-server package still isn't compiled with hal support, so you would have to patch and rebuild the package.

Using iMac (Target Display Mode) as an External Display for MacBook Air

I have a Mid 2010 iMac with a 2 thunderbolt ports. I now have a brand new MacBook Air (2012 Core i5 1.8GHz with 8GB RAM) with a thunderbolt port. I have a Belkin Mini Displayport Cable to connect the two. I want to use the iMac as an external monitor for the MacBook Air. I cannot seem to get this to work. Can I do this? Do I have the right cable?

You can do it but you need a thunderbolt cable to connect the two. Then just hit CMD F2 on the iMac and it will enter Target Display Mode.

Thunderbolt display not recognized - but only after supper!

Ugh. Getting seriously frustrated with my 27" TB display, now. Have been using it on a MBP 2011 for a while, had experienced some flickering with Lion, not so with ML.
Last week, I left my MBP connected and went in for supper; when I came back, the MBP had - of course - fallen asleep. Woke it up, but only the MBP display came on, not the TB display. I unplugged/replugged, several times - same thing.
Rebooted the MBP, with the TBD plugged or unplugged - same thing.
SMC reset - same thing.
I spent two nights reading forums and trying all sorts of fixes - no luck.
Finally, I resigned to booking an appt with the local Apple Store; this appt was for this morning. This morning, before getting the monitor out of the office, I decided one more time to connect my MBP - it worked!!! ***?
So I worked all day, no issues. Very happy.
Tonight, before going in for supper, I unplugged the monitor and closed my MBP's lid so it would go to sleep. When I came back, I woke up the MBP, connected the TBD, and...nothing. Black screen!! Went through a couple of rigamaroles to try and get it back - nothing!
Argghhh!!
So now, I'm wondering if my diet has something to do with it. Tonight, I had T-bone steaks on the grill, with roasted potatoes and a salad. Maybe if I would have had pasta instead the monitor would have gone back on?
Any ideas, suggestions or magic spells would be greatly appreciated.
As would a fix from Apple...
Jacques

I have been having the same problem since I got the **** Thunderbolt display and a lion-installed macbook pro in September last year. I've been sitting tight thinking surely Apple will fix this debilitating defect on their premium equipment - How wrong was I!
My story is similar in that I always take the laptop home from work and have the Thunderbolt display in my office at work. I close the lid putting the laptop to sleep and pull out the cables. When I go home I may use the laptop via its internal display (one would think that would be ok) and then close the lid and put it back to sleep. WHen I return to work, plug in the cables and open the lid, most of the time the thunderbolt display stays black. On a rare occasion it will switch on but I can't fathom any pattern as to when and why it might work. The only solution to get the display to switch on is to reboot the laptop (and lose all my open documents from work the previous day and night). Recently, and I'm not sure what has triggred it, things have got a whole lot worse. Now, if I reboot the laptop when connected to the unresponsive screen upon restart the Thunderbolt display freezes on a grey screen and the laptop display stays black. The only solution is to hold down the power button and force shutdown the laptop. This happens everytime now, I simply cannot reboot the laptop with the thunderbolt display attached!
Nice premium equipment Apple! As this stuff was bought by my work I have learned to live with it. If had bought this junk with my own hard-earned then I would be furious and would have demanded a refund/replacement/explanation a long time ago.
Maybe, just maybe, Apple may one day actually fix this £2000 setup I have sitting on desk so that it switches on when its supposed to. Is that too much to ask?
Sat

Thunderbolt Display Firmware 1.2 / 10.10.1 Update device connected but no display

I looked through a lot of the Thunderbolt Display Firmware 1.2 posts about the display not functioning but never saw one with circumstances quite like mine. In my case, I updated the firmware and the display continued working until I had to reboot for the 10.10.1 system update. After the reboot, my display stopped displaying.
The display wasn't completely non-functional. The symptoms I saw were:
The Displays system preference only showed one display available (my rMBP)
The System Report under About This Mac showed my Thunderbolt Display was connected
The keyboard connected through the Thunderbolt Display worked properly
Just no display at all. First I tried a simple reboot with no success. Then I tried a PRAM reset (3x) again with no success. Finally I disconnected all Thunderbolt connections from my rMBP and did an SMC reset. After booting back up I reconnected the display and boom back in business!
Hope this helps someone.

Solution:
As I proofread my post, I realized I did not note the part about the "built-in" cable and only focused on the "connected directly" part of the error.
Using the built-in Thunderbolt cable I was able to successfully install the firmware.
If anyone else makes this dumb mistake, maybe this post will help you not feel too bad!

One Pixel Borders Print Fine But Only Display At Magnification

I've looked around at some other posts on image borders and haven't seen any posts about image borders that print fine but do not predictably display in the PDF. For example, I add one-pixel borders to PNG images I create in SnagIt. I then use FrameMaker (8 and 11) to generate PDFs. When I view the PDFs in Acrobat Standard or Adobe Reader, the various sides of the rectangular border appear differently (some missing, some fat, some thin) until I magnify way over 100 %.
My document reviewers are routinely telling me I've neglected to add the 1 px border to every side if the images, but they are there--just only visible when the document is printed or when it's enlarged on the screen.
Are there any tricks for getting Adobe Acrobat/Reader to display these 1 px borders consistenly on screen? I should mention that this is also the case if I generate PDFs from MadCap Flare.

Vincenzo
By all means, blog. But I'm wondering if something along the lines of a petition / open letter format might be more effective in affecting the corporate decision-making process. Those of us affected should discuss and, if possible, get help on who and how to get this addressed. That's why I've asked for advice on who the relevant person is who I should contact. If you've ever worked in a bureaucracy you know that sometimes talking to the right person can save a lot of time and trouble.
BTW, if the Apple moderators are following this thread, I'd be pleased to know what your thoughts are on this issue. This problem seems fairly common, but only among users of the 1.67 iteration of the 17" PB (as far as I know). We are users who invested a lot of money in the best (& most expensive) mobile hardware that Apple had to offer at the time of purchase. We're probably faithful customers who, in time, will spend a lot more money on Apple hardware in the future. Why squander goodwill over a matter like this?
It just seems to make sense that Apple would institute a limited recall to fix this known and obvious fault. It's a good idea for us and for them.
Peace
G
PowerBook G4, 17, 1.67 Mac OS X (10.4.7) 1 GB RAM, 60 GB IPod Photo
PowerBook G4, 17, 1.67 Mac OS X (10.4.7) 1 GB RAM, 60 GB IPod Photo

Display all columns but only unique values in one column

My table looks like this;
ApprovalKey (PK)
ApprovalCCN (Links to main table)
ApprovalName
ApprovalDate
ApprovalMsg
ApprovalResult
Typical data would look like;
Key CCN ApprovalName ApprovalDate ApprovalMsg ApprovalResult
1 1 John Smith 12/12/2014 16:20:22 Testing the message False
2 1 Andy Brown 12/12/2014 16:20:27 testing the decline False
3 1 John Smith 12/12/2014 16:20:46 More testing True
4 1 Andy Brown 12/12/2014 16:25:13 testing True
5 2 Andy Brown 12/12/2014 16:25:26 testing the accept True
6 2 John Smith 12/12/2014 16:34:04 testing, 1 2 True
When I view data from linked table (matched via ApprovalCCN) It should display data from this table but only the latest unique entry from ApprovalName.
eg, table from above has 4 entries for ApprovalCCN=1 but should only show the following;
Key CCN ApprovalName ApprovalDate ApprovalMsg ApprovalResult
3 1 John Smith 12/12/2014 16:20:46 More testing True
4 1 Andy Brown 12/12/2014 16:25:13 testing True
Distinct ApprovalName doesn't return all values and I can't seem to get my head around Group By to view all columns
Any help would be appreciated

Here is my test data;
7 30 John Smith 12/12/2014 16:20:22 Testing the message False
8 30 Andy Brown 12/12/2014 16:20:27 testing the decline False
9 30 John Smith 12/12/2014 16:20:46 More testing True
10 30 Andy Brown 12/12/2014 16:25:13 testing True
20 30 David Jones 12/12/2014 16:25:26 testing False
21 30 David Jones 12/12/2014 16:34:04 Testing the message True
25 30 Me 12/12/2014 16:35:05 testing the decline False
26 28 You 12/12/2014 16:36:05 testing the decline False
27 28 Me 12/12/2014 16:37:05 testing True
28 28 John Smith 12/12/2014 16:38:05 testing the decline False
29 28 David Jones 12/12/2014 16:39:05 testing the decline False
30 30 David Jones 14/12/2014 17:39:44 True
31 29 David Sawyer 14/12/2014 18:51:06 declining the offer False
32 29 David Sawyer 14/12/2014 18:51:37 My message False
33 29 David Sawyer 14/12/2014 18:52:01 another message False
34 29 David Sawyer 14/12/2014 18:52:16 True
35 29 David Sawyer 14/12/2014 18:52:25 True
36 29 David Sawyer 14/12/2014 18:52:34 True
If ApprovalCCN=30 I get the following;
10 30 Andy Brown 2014-12-12 16:25:13.000 testing 1 1
30 30 David Jones 2014-12-14 17:39:44.000 1 2
9 30 John Smith 2014-12-12 16:20:46.000 More testing 1 1
25 30 Me 2014-12-12 16:35:05.000 testing the decline 0 1
All I need is 3 Approved, 1 Declined
Apologies if I wasn't clear

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

Similar Messages

Maybe you are looking for