External monitor on Imac?

Just spent 45 minutes with Adobe support enabling my external monitor , a TV connected to Thunderbolt via HDMI adapter. Got it working but support did not explain how, they accessed my Imac and did it themselves. While working the monitor went back to the screen saver and I'm not sure what I accidentally hit that lost external preview. Ideas?

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How connect External monitor to iMac?

How connect External monitor to iMac?

How to do that depends on the iMac variant you have. iMacs have been in continuous production since 1998 in four broad families that are not 100 percent alike in behavior.
Please look at the iMac images and descriptions in the links on this site:
http://www.everymac.com/systems/apple/imac/index-imac.html
and tell us what variant you believe you have.
iMacs from the first through third-generations (G3, G4, and G5 processors) that support an external monitor were not set up to do anything other than "mirroring"--you see on the external exactly what is on the built-in display.
Your description sounds like you have a newer iMac than this forum covers because, starting with the Intel iMacs in 2006, external monitors were allowed to do both mirroring and "extended desktop." The latter is what I believe you are seeing.
Try this first: press the F7 key. On many Macs capable fo using external monitors, this was a shortcut to toggle between mirrored and extended display. If your keyboard has an "fn" modifier key, you may need to press that to get the F7 key to work.
If you have an intel-powered iMac I can ask the Hosts to move you to that forum, which is much more active than this one which is for pre-2006 iMacs.

2 external monitors for imac?

Is it possible to connect two external monitors to the new 2013 IMAC? If so, how?

Yes, one per thunderbolt port. Of course these displays should support either DVI or HDMI with 1080p minimum if you want the full effect. VGA is analog, and only gives you 4:3 screen ratios. mini-Displayport to DVI and HDMI adapters exist. HDMI has built-in audio support.

External monitor with imac not working

Hello.I have problem with external monitor connected to my imac 27 via mini display port to vga connector. It was working perfectly but around month ago it suddenly stopped. It looks like my monitor doesn`t get any signal from imac, at least that`s what is says on external monitor.. also, when monitor is connected my mouse is jumping all over the place. I`ve been looking everywhere but i couldn`t find solution to this problem and i know there are many people having the same issue. Did anyone find solution?

I have my 24" connected to a 32" TV via DVI and have had no problems thus far.
When you open display preferences is the external display detected? If so, try switching between mirror and extended to see if it comes on.
The only other thing I could suggest is to try another VGA connector and/or cable. The fact the mouse goes erratic sort of points to there being the problem somewhere in the connection. You might want to try DVI if your monitor supports it.

NEC Multisync 2090uxi as external monitor to Imac 20" - will it work?

I'm thinking of buying this NEC display to use as an external monitor for my 20" iMac.
The NEC's supported resolutions appear to be: 1280 x 1024; 1280 x 960; 1200 x 1600; 1152 x 870; 1152 x 864; 1024 x 768; 832 x 624; 800 x 600; 720 x 400; 640 x 480
Will this work? I don't see the iMac's native resolution on that list.
Any advice much appreciated! Many thanks.

Hi buddhahat
With Mirroring both displays use the same resolution and depending on the difference in native resolution, will depend on how funky one of them appears.
With Extended Desktop you have a preference panel for each display and a choice of resolution for each display.
For more info: http://docs.info.apple.com/article.html?artnum=303086
Using extended desktop open the Display Preferences, click Arrangement and follow the on screen instructions. Then just drag any open window from the iMac Display over to you other display window and away you go.
DVD movie playing on the big screen and posting in Discussions on the iMac display all at the same time!
I have a 27" flat screen TV connected to my 17" Early Core Duo set to Extended Desktop. The TV Display is excellent for DVD movies in DVD Viewer, iPhoto previews & Slideshows, MS Word PowerPoint Slideshow & presentations, Quicktime videos, Web videos etc.. The only draw back is that working in text windows is a little rough.
Dennis

How do I use my late 2011 iMac ( with thunderbolt) as external monitor for laptop/Xbox or other device with hdmi as output.

May be this question has been asked thousand times. how do I use my mid 2011 iMac ( with thunderbolt) as external monitor for laptop/Xbox or other device with hdmi as output. if apple hasn't removed that feature and has just moved that functinoality to thunderbolt then how can I use it. currently there is no laptop available with thunderbolt output. no 3rd party converter available. whats the use of having feature on latest functionality if we cant use it. I wish they would have made one port has mini-dvi and other thunderbolt for backward compatibility untill some vendor comes up with converter.

It Says :
Mac (21.5-inch, Mid 2011) and iMac (27-inch, Mid 2011) and later computers support Target Display Mode via Thunderbolt to Thunderbolt cable (2 m) when the source is another Thunderbolt-equipped computer.
Name one computer model/vendor which has thunderbolt as output for display + audio. this is so stupid to move to new technology without availbility of its compatible devices.

Can i use a hdmi to mini display port cable to use my iMac as external monitor for a windows laptop?

Does anyone know if a hdmi to mini display port cable can be used to link a windows laptop with an 27 inch iMac to use the iMac as an external monitor. Or are there other options to connect my DELL latitude 6430?

Is the 3.5mm-to-optical cable any better than using a standard 3.5mm? I don't know too much about this stuff. My thought process was that if the source of the connection is a 3.5mm jack, does it make a difference using a cable that starts as a 3.5 and converts to optical?
Chances are excellent that if your receiver is less than 20 years old it has an optical input, this is a digital signal which will sound MUCH MUCH better than using an analog 3.5MM to 3.5MM connection. I recommend using the cable suggested or one with the same connections but of a different length if your needs warrant it.

IMac and External Monitor

I have an early 2006 iMac 20" core duo 2.0ghz 2GB Ram.
I already have an external 17" monitor plugged in with the mini dvi adapter.
I have recently purchased a 32" Samsung TV, which has PC Input. This will be arriving shortly.
Is there any way for me to connect both the TV and the external monitor to the iMac? I would rather mirror the display to the TV and extend the desktop onto the 17" monitor.
If there is a way to output to both, but by a different way - i.e. not mirroring and displaying - this would be great.
I didn't know whether it was possible for me to use some sort of splitter. So a mini dvi to 2 vga's. Then vga to tv and monitor.
Thanks for the help.

Hey Stephen
You might want to check out [DisplayLink|http://www.displaylink.com>
This Google Search: [multiple displays with intel imac|http://www.google.com/custom?q=multiple+displays%20with%20intel%20imac&sa= Search&client=pub-6263300333013957&forid=1&ie=ISO-8859-1&oe=ISO-8859-1&cof=GALT: %23008000;GL:1;DIV:%23336699;VLC:663399;AH:center;BGC:FFFFFF;LBGC:336699;ALC:000 0FF;LC:0000FF;T:000000;GFNT:0000FF;GIMP:0000FF;FORID:1;&hl=en]
And these from [MacWorld|http://www.macworld.co.uk/mac/news/index.cfm?newsid=20862] and [Cambridge|http://www.cambridgenetwork.co.uk/news/article/default.aspx?objid=43 026]
Dennis

2013 27" iMac using mini displayport to VGA, external monitor off center.

I recently purchased a new 2013 iMac 3.5 i7 and connected two external monitors. The minidisplayport to DVI adaptor works fine on one monitor but the minidisplayport to VGA is off center on the 2nd monitor. There is a 2" black band on the left side of the screen. I've replaced the adaptor, cable and tried on two different monitors. I've also tried repositioning image in the monitor settings which it can't move far enough. It only happens on 1920 x 1024. Any other resolution is fine. Other than that it works fine, but this space is going to drive me nuts. Because these are 23" monitors I really would like the highest resolution possible. I'm stuck. Any thoughts?

Update: I switched to DVI and it worked perfectly. I guess there could be an issue with the mini displayport to vga adaptor on the 2013 iMac. I also tested it on a 2012 mac mini and the vga operated as it should.

Imac as external monitor for windows Notebook

Hi,
I want to switch from my Windows Pc to a mac for private use.
I prefer the new iMac (2011) 21,5" but I could not get an definite answer (not even in my local apple store) if it is possible to connect an existing Notebook (with VGA Mini-d-sub or DVI connector) to the new iMac in order to use the iMac as an external monitor for the Notebook.
I definitely need this for my business work in my home-office so this information is vital.
If ist is not possible I have to take the macMini and stay with my standard monitor.
Can please someone tell me if it is possible at all and if so, how it can be done.
I searched the internet and only found out that it was possible with the older 27" model but no information for the 2011 21,5" so please help!
Thank you in advance for your Support.
Celindir

Hi,
Sorry to say, but ...
The 2011 iMacs (21.5" and 27") can only be used as a second display via a Thunderbolt-to-Thunderbolt cable.
The 2009 and 2010 27" iMacs can be used as a second display via a DisplayPort connection.
http://support.apple.com/kb/TS3775 andhttp://docs.info.apple.com/article.html?path=Thunderbolt/10.6/en/30822.html
Stefan

IMac, external monitor flicker/blink blue

I have an external monitor hooked up to my iMac and I have had no problems until today. It's the mini-DVI to VGA style connector.
During the day, I jarred my desk with my knee. The iMac and external monitor both blinked about four times, becoming blue like in the startup process. The view on the external monitor also went fuzzy for a second. No CPU functions appear to have been affected.
I shut down, checked all the cable connections, and restarted. The problem seemed to be resolved - until later when I was using the computer, and the same thing happened twice in about two minutes. This time the desk hadn't moved at all. Again, no CPU functions appear to have been affected.
In the Console, I see these messages at the time of the events:
<Error>: kCGErrorIllegalArgument: CGSGetDisplayBounds (display 3e41b5b9)
kCGErrorIllegalArgument: CGSGetCurrentDisplayMode
kernel
EDID does not contain Extended EDID, not valid for audio
A search seems to indicate that it may be cable-related, which is the best-case scenario, and I'm hoping it's not the graphics card or logic board.
Can anything be done to stop this from reoccurring?

Now it appears the problem has gotten worse. Much worse.
I've had the external monitor disconnected for five days now. I tried to plug it back in and the computer did not recognize it AT ALL. Nothing showed up on the display.
In addition, or however, the mouse movement on the iMac itself became very, very unresponsive.
Once I disconnected the monitor, everything on the iMac was functioning normally.
Have I messed something up inside the iMac?

Can i use my 21.5" imac as an external monitor for my macbook pro?

I have a 21.5" iMac (with Intel processor) that I'm trying to use an external monitor for a new Macbook Pro. Both machines have a thunderbolt input. I bought a Belkin mini displayport to mini displayport connector, but my macbook is not displaying on the iMac. I saw videos online showing this done with the 27" iMac, saying you just needed to press Command+F2, but that is not working for me. I can't seem to find any posts confiming if I can use my 21.5" iMac this way though.

https://discussions.apple.com/thread/4082303?start=0&tstart=0

Can I use my iMac 2009 as an external monitor for a MacBook Pro

I will soon be getting a new MacBook Pro with Retina display. It has an HDMI port.
My current iMac 21.5" late 2009 model seems to have a port with what looks like a little monitor symbol, next to the firewire port. And the specs say:
Graphics and video support
NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory3
ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
Built-in iSight camera
Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI (adapters sold separately).
Support for extended desktop and video mirroring modes
Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display
Does this mean that port is just for video output to an external monitor? Or is is possible to also do video in?
On the one hand it feels like a waste to use a perfectly good iMac as a monitor. But the MacBook Pro actually has better specs, and so I was wondering if it is possible anyway.
Thanks,
doug

Thanks for your reply. After reading the article though, I'm still not really sure what the answer is. For example, you mention something that can be done, with some hurdles to go through, for 27" iMacs. Mine is a 21.5" iMac, but seems to have the same port you mentioned in the article. Or maybe it isn't. Anyway, I'm still not sure if it is possible after reading that. Interesting information though.
doug

IMac does not recognize external monitor using Mini Display Port to HDMI

Hello,
I have been trying to get an external monitor (HDTV) set up for use with my iMac using a Mini Display Port to HDMI cable I just got. However, when I connect it to my iMac's mini display port, the imac's screen goes black for about a second, then returns, but it does not detect the external display. The other display is just showing a "no signal" message on the screen.
I have restarted, reset PRAM, connected and disconnected the cable several times, tried changing the resolution on the imac, plugged in/out the other display, and clicked the "detect displays" button using the option key in display preferences, but nothing has worked.
I am using an early 2009 iMac running Mavericks.
I've been using the AirParrot app, but it's horrible for video and a little slow.
Can anyone please help sort the issue here? I feel like ive exhausted everything that I know to do.
Thanks.

I am having the same issue. Hope Apple can fix this soon!!!

Is it possible to use the old iMac 2010 21inch as an external monitor for my 15inch Macbook retina?

Is it possible to use the old iMac 2010 21inch as an external monitor for my 15inch Macbook retina? E.g. Using a mini-display cable to connect from the imac mini display port to thunderbolt port on my macbook.

Apple shows only the 27" version supporting Target Display Mode.
<http://support.apple.com/kb/HT3924>

External monitor on Imac?

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