Connect iMac as 2nd monitor?

I'm using my new 13" macbook pro and I'm hoping that someone can instruct me how to set up my iMac (2.33 GHz Intel Core 2 Duo) so that I can use dual monitors?

ScreenRecyler is your only option, and I wouldn't even bother installing it.
I was trying to do the same thing as you, can gave that software a try and it DID work, but it was very laggy and not really usable. I even tried setting it up on its own network connection using firewire and then gigibit Ethernet directly between the two machines and although the did improve, it was still too slow to smoothly scroll a web page or play a video without the frames breaking up.
So sorry, but there is no way.

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New iMac loses 2nd monitor

My new Imac 21 - i7 - Lion - dual monitor (connected with thund-hdmi adaptor) has a strange behavior.
Everything works fine, but when the system goes in power saving mode, on coming back sometimes the second monitor becomes gray (working but no wallpaper), sometimes comes back normally, but ALWAYS all applications windows goes back to the main imac monitor.
I've tried to switch of the 2nd monitor and the behavior is the same. So is not a power saving problem.
It seems that the imac always autodetect monitor situation on the fly and moves windows back to the main monitor.
The problem is that the "moving windows back function" seem to be faster than monitor detection.
Is there a way to say to lion: "I always have two monitor, please don't change"?!?
thank you for help.

I suspect it may be the adapter. I would recommend trying the one Apple recommends here or trying another connections such as a VGA or DVI assuming the monitor has that type of connection.

Connecting imac to LG Monitor

What adapters or connections do i need to connect the LG monitor, with 15-pin cord, to my imac or macbook?

Hello mahjr
Welcome to Apple Support Communities
Depends on exactly which year model iMac and MacBook you have? The DVI adapters changed from Mini-DVI to Mini Display Port in the Early 2009 models.... If your not sure exactly which year model your Mac's are, refer to your User Guide's.
The 2006, 07 and 08 Intel iMac's use the Mini-DVI to DVI adapter > [M9321G/b|http://store.apple.com/us/product/M9321G/B]
and the 2009 and 10 Intel iMac use the MiniDisplay Port adapter > [MB570Z/a|http://store.apple.com/us/product/MB570Z/A?fnode=MTY1NDA4Mw&mco=MTE5M jYxODE]
In addition to the correct adapter you will also need a DVI (digital) cable to go from the adapter to the LG instead of using the VGA (analog) cable that came with the LG.
Dennis

New iMac and 2nd Monitor

is it possible to connect a regular monitor (HDMI) to the new iMac?
If not, is there some other way to use two monitors?

You could use a Thunderbolt to HDMI adapter

Adjust brightness of iMac as 2nd monitor

I have a 2012 MacBook Air plugged into an older iMac via mini Display port cable. (Not thunderbolt).
How can I adjust the brightness of the iMac? The Displays system prefs doesn't have a brightness slider for the iMac screen. And the brightness keys on the keyboard only adjust the Air's display.

The iMac controls don't work ?
from: Using a 27-inch iMac (Late 2009 or Mid 2010) as an external display
Use the keyboard of the 27-inch iMac to adjust display brightness and sound volume and to control media playback of applications running on the 27-inch iMac in Target Display mode. Other keyboard and mouse input is disabled on the 27-inch iMac while it is in Target Display mode.

HP T510 - 2nd Monitor Constantly Turns off

Good morning, I have a couple of Thin Clients that keep loosing connections to the 2nd monitor. To get them back on the user has to reboot the thin client. Updated Firmware and as far as I have seen they have had all updates applied as applicable. The company standard is to have a screen saver but I could disable it locally at the thin client. The problem is if it gets set again when its updated. Just checking to see if there is a known fix for this. Thanks

Hello ITTech1,
You may also want to post your question in the Enterprise/Business forums since you have Thin Clients.
http://h30499.www3.hp.com/
Thin Client threads here:
http://h30499.www3.hp.com/t5/Workstations-Thin-Clients/bd-p/bsc-635

Connecting a 2nd monitor to my 27" iMac

Hi All, I am looking to buy a 2nd monitor to go with my 27" 2.9 GHZ iMac (purchased May 2013) and wandered if anyone could provide some advice on the best way to connect it through a thunderbolt port and is there anything I must ensure the new monitor has or certain specifiction. i am looking to buy a 27" monitor to sit aside my current one. Thanks in advance for any help.

Unless it's an Apple Thunderbolt display or some other Thunderbolt disply you simply connect a MiniDisplay port to (VGA, DVI or HDMI) depending on what the external display has and connect it up. The System Preferences - Diskplays and setup the setting the way you want. This is the ONLY way it will work. There are hundreds of Youtube videos that show you how, here is one example:
http://www.youtube.com/watch?v=iKkPmJ1lZ4Y

Losing connection to 2nd monitor when iMac sleeps

I have a 2nd monitor connected to my 21" iMac (late 2013) with Mavericks via displayport/thunderbolt port to HDMI. I had the same one with the same link connected to my old 2010 Macbook Pro, and I never saw this.
What happens is when the computer goes to sleep, all of the windows on the second screen move to the iMac, and my Wacom tablet even goes from being mapped to ONLY my second monitor to being only mapped to the iMac!
This is kind of driving me crazy, and I have searched and Googled and just can't find a solution.
Any ideas would be rad. Thanks.
David

Try a reset > Mac OS X: How to reset the printing system

What cable do I need to connect a 2nd Monitor from the thunderbolt port?

Hi I have got one of the brand new iMac's with thunderbolt ports - what cable do I need to connect my Imac to a 2nd display either VGA or DVI - also is there a budget version about as well as I am sure its going to cost a lot from the apple store

Thanks I understand that I need another cable and have that from when I connected my old PC to the 2nd monitor.
http://store.apple.com/us/product/MB570Z/A?mco=MTY3ODQ5OTY - is this the one I need if going to DVI
I just dont want to waste more money on a cable that says its for an imac to 2nd screen and find it doesnt fit
For info my iMAC is the latest version (27" with the 2 thunderbolt connections and 1 firewire)
Thanks

IMac does not detect correct resolution of 2nd monitor

I am attempting to use my 42" LG HDTV as a 2nd monitor for my iMac. The native resolution for the LG is 1920x1080 but the iMac only allows me to select up to 1600x1200. It seems to think that the LG is a smaller screen than the iMac as well and my images are stretched. The monitors are also disproportionate, for example, if I expand a window so that there is an inch of space on all 4 sides on my iMac it will overwhelm the screen of the larger monitor so that only about 2/3 of the window is visible. It's as if the iMac thinks that the LG is in 4:3 display mode.
I am using a mini-DVI to VGA adapter. How can I get full resolution from my 2nd monitor?

The (analog) VGA connection is limiting your resolution. Idealy a (digital) Mini-DVI to DVI adapter and a DVI cable should allow the full resolution in Extended Desktop Mode.

1 Lightning port as both 2nd monitor AND storage SSD? - 21" 2011 iMac

Hello!
I am considering picking up my first SSD drive for use as a work horse for streaming video and audio for my prosumer use. My 21" 2011 iMac only has the one lightning port, which I plug my old 19" LCD monitor into for the extra screen real estate. Not wanting to bottleneck the SSD speed by connecting it to USB 2 or even FireWire, does such a throughput device exist that would allow the one lightning port to support both my 19" display as well as a mounted, external SSD drive? I know that the lightning port had an expandable future, but I'm not sure if this is possible. If it IS possible, I would imagine doing so would still be expensive. Thanks a bunch!

Haha, THUNDERBOLT! Sorry, mate. I must have been thinking of the newer iPad/iPhone connector. Goes to show you how much mind I've paid to apples new port. Anyway, that's great news. Thank you. I was pessimistic about their being enough bandwidth to fully support my 2nd monitor in addition to the top notch speeds of an SSD. I was curious to know where there might be any sacrifices one way or another.

Best 2nd monitor for iMac Intel 20"

A few months back I stumbled upon a great article comparing Apple and 3rd party monitors that could match up well with the iMac Intel 20".. of course I can't find it now that I'm using actually using this iMac. I'm curious to hear your experiences/views on 2nd monitors that match up well for this specific computer. Thanks

There is a MiniDVI output port on this iMac. Simply purchase one of the following adaptors and configure the dual display in Apple menu > System Preferences... > Displays. (The options appear when you connect the display):
Mini DVI - DVI
Mini DVI - VGA
Mini DVI - Composite/S-Video.
DVI will also certainly provide the best picture quality but the exact choice of display depends on your budget and intended usage. For example budget LCD displays are inappropriate for work that requires colour accuracy.
Your iMac will support displays with the following resolutions:
Digital resolutions up to 1920 x 1200.
Analogue resolutions up to 2045 x 1536
mrtotes

Arrange option missing when a 2nd monitor is connected

I connected a 2nd monitor to my 1.9 pre-Intel iMac g5 but I can only mirror my destop. When go under Display preferences, I am not given the option to arrange the displays.
What am I missing?
~reicko

That is how Apple designed those iMacs. The Intel-based iMacs were the first iMacs to allow extended desktop.
However you may want to take a look at Macworld's "Screen Spanning iMac" article.
Message was edited by: Duane

HT3492 What do I need to do to use the iMac as a monitor from my HP laptop? I have my HP connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

What do I need to do to use the iMac as a monitor form my HP laptop? I have my laptop connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

vga may not be a compatible port
https://discussions.apple.com/thread/2246912?start=0&tstart=0
more hits
https://www.google.dk/search?source=ig&hl=da&rlz=1G1TSEH_ENDK367&q=use+imac+as+m onitor+for+pc&oq=use+imac+as+mon&gs_l=igoogle.3.0.0l10.2417776.2420497.0.2421354 .15.11.0.2.2.0.316.1723.0j4j3j1.8.0...0.0...1ac.-OkFwmTKBg0

HT1338 cannot connect my MacBook Air to a projector -does not detect and 2nd monitor. I have a new Mini port to VGA cable made by apple. When I read online I see that many people have the same problem - Is this an Apple defect??????????????????

I cannot connect my MacBook Air to a projector - It will not detect a 2nd monitor or display. I am using an Apple made Mini Display port to VGA adapter. As I read online I see that many other peple are having the same problem. Is this an Apple defect!!???? If so it just burst the bubble about how great macs are. I never had a problem with that on a PC. I hope I am wrong. What can you tell me?

Hi There,
I have had the exact same issue but with a projector.
The issue lies with Mountian Lion 10.8.2.
I tried many a combination with no luck to get HDMI working.
Took my mac into the apple store and came to the conclusion it was the software, so I asked them to install 10.8 onto it (this is destructive so a backup is a must)
Bought my macbook home and voila, now displaying through my projector.
There is a small graphics update after 10.8.1 which seems to be the cause.
Hope this helps.
Thanks.

Connect iMac as 2nd monitor?

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