IMac :: External Monitor Not Currently Set To Mirror
Aug 6, 2008
Upon booting the machine, the LCD display flashes a proper view of the login screen for about 1 second
but then goes dark. When an external monitor is attached the external monitor works perfectly fine -- the
only trouble being that the external monitor is not currently set to "mirror" so it is impossible to log in and access the machine. The IT dept at the institute has a monopoly on repair of computers and so the quick answer -- take it to Apple is not all that easy. Is there a way to:
1) set the iMac to mirror display upon booting up by some clever key combination?
2) set the machine to mirror by remote access and command line methods?
3) mirror by changing something using target mode?
4) or the obvious...somehow login using the real estate provided by the external monitor.
Also has anyone seen this problem with iMac displays? An Intel iMac I think 2.16 Intel Core 2 Duo processor running Tiger.
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Jan 9, 2010
I have a 27" i7. I have a 24" DVI Montior hooked up to it via MDP->DVI adaptor. When the 24" Monitor is on, everything is fine. When I turn the monitor off, the magic mouse tracking on the 27" screen stutters. I am not kidding - it took me ages to figure out that to fix I either need to turn the other monitor on OR disconnect the MDP->DVI adaptor.
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Aug 30, 2014
How to mirror to tv monitor using macbook pro 2012. The airplay is not displayed anywhere except iTunes which only plays what is on iTunes.
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Nov 14, 2009
I have a 27" Imac and want to use an old 19" monitor as an external unit. I have it hooked up and turned on. Just the old wallpaper shows on it. There isn't an icon or anything diff on my iMac screen for it. How do I use the external? I realize this is pretty dumb, but I'm a newbie here and my Mac expert son is in NC....
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Apr 8, 2008
I have a newer iMac 24" bought in 11/2007. I have the mini-dvi to vga converter and when I connect it to a external tv capable of 1024x768, the iMac freezes and does nothing. I disconnect and the screen turns blue and the flickers back on and everything works. I have made the connection then booted up, and I have tried every resolution all the way down to 640x480, same thing it just locks up the screen, but again as soon as I unplug the mini-dvi to vga cable from the iMac it flicks to a blue screen and everything comes back. I have reviewed dmesg nothing, and revieiw /var/log/messages. Is there any troubleshooting I can do. I am old school unix/linux guy just converted my family to Apple and would like to use the display on my tv to watch my iTunes movies.
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Sep 29, 2010
I just did a zero delete on my computer and only have CS5 master suite and Lightroom on my computer now (MacBook Pro 2010). I have 2 external harddrives I'm using. Both are 1TB. I have the Master drive with everything on it, and I want to use the 2nd drive to keep an updated copy of everything. Then I have a 3rd Hard drive, that I want to backup the 2nd backup and keep that off site. What is the best way to go about this?
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Oct 23, 2009
I heard this is possible, however will it be possible with a windows laptop ( dell e6400) It's a work laptop and wasn't sure If I could do this with some sort of adapter.
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Nov 14, 2009
Title says it all...how does the new iMac work as an external monitor? Is there a way to use it as a monitor without having to log in / load OS? Is there any delay as compared to a standard monitor? I'm just thinking long term as the iMac becomes long in the tooth and we move on to new machines. Can the iMac still be used as a quick turn on monitor or do you need to load up both machines (and do you need to rely on all parts functioning in the iMac, such as mobo, hard drive, etc. still working) to utilize it as a monitor)?
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Feb 16, 2010
I am iMac 27" owner and I would like to know if it is technically possible (how?) and advisable to connect a PS3 (or other videogame station) to show it in the iMac 27" display.
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Jun 18, 2008
Is it possible to use an iMac (g4) that has a broken hard drive as an external monitor for another computer?
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Sep 17, 2010
On my 2008 24inch iMac the screen has a problem ( dead pixels ) and I will get it replaced in the future , in the mean time I have a very nice large external monitor connected to the iMac which I use ok, what I am looking for is a way at first when booting up , to be able to see both the iMac's screen and the external monitors screen , then some how shut off / make blank the iMacs screen only leaving the external monitor on ?
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Nov 18, 2010
I have an iMac that I keep connected to an LG HDTV via Mini-Displayport to HDMI. I was wondering if there was any way to disable the external monitor without unplugging it? Turning off the TV doesn't actually disable the monitor as I still have the OS thinking it's still on therefore spaces imitates it as being two monitors when its really only one. The main reason I want to disable it is to save my VRAM while I'm playing Source games on Steam.
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Dec 17, 2010
I want to hook up my new monitor with my 21" Imac. I have bought this mini displayport to dvi adapter. [URL]. What dvi cable should I buy? The adapter is dvid single link, but according to wikipedia the conector is dual link?
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Dec 9, 2006
I've been given (!) a G5 iMac which is practically brand new. It's only problem is that it suffers from the sudden shut off issue which seems to plague the G5 thanks to a faulty Power Supply and some caps on the mobo which get taken out by the PS. I've replace the power supply, but can't afford to get the mobo fixed, and since neither Apple nor any of the alternative operating system makers such as Linux will be supporting this system into the future, I figure that the hardware is essentially orphaned. I'd dearly like to use the screen though, as it's in great shape and is a beautiful display. So, my question is, can the internal screen be connected to an external source such as the video card of another computer? It would be great to use it for my music production machine. If anyone has any ideas, let me know. In the meantime I'm going to have a look around inside this beast and see what I can do.
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Jan 13, 2009
I'm looking to turn my new macbook pro into an external mimic monitor for my new imac. ...like, so that I can move my mouse from the imac screen to the pro's screen. How do I do it? Is it possible to do it wireless?
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Feb 9, 2009
I searched the forums, but it doesn't appear as if this question has ever been sufficiently resolved...so I am going to raise the question again. I apologize in advance if I somehow missed a thread.
I have an iMac (20", 2006 model, Intel Core Duo, etc.) that is in excellent, working condition...aside from the fact that it didn't like having its face smashed in. The screen is almost completely covered with the weird leaf-like pattern that forms in such situations...and is thus, unusable at this point.
Can anyone tell me, without a trace of doubt, if it is possible to hook up a new LCD monitor to the iMac and use the old, broken unit as a CPU? If so, what will I need? Has anyone actually done this?
Conversely, would I be better off simply selling the iMac for parts on eBay and putting the $$ toward a shiny new Mac?
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May 2, 2009
I have just bought an external monitor to make a dual screen set up with my imac. So for the first time I am looking at the colour profiles. Would I be right in thinking that if I select profile "sRGB" on the external and "sRGB IEC61966-2.1" on the iMac then when I have the two screens side by side, the colours will match? I have using the Apple 'iMac' profile for two years and anything else just looks strange. What is the 'true' colour or is it just a matter of opinion? Which profile is nearest to real life?
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Aug 7, 2010
I'm looking for a good External LCD Monitor for the new iMac 27
I'm a Software Engineer and want to use it along with the iMac for developing iPhone, iPad applications
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Aug 16, 2010
I bought the mini-display port to dual link dvi adaptor for $99. However, it doesn't work from going from my pc to the imac or from my macbook pro to the imac. I find it retarded that they wouldn't even sell a working adapter.
Has anyone gotten this to work or does anyone know which adapter I can buy to get this going?
Again.
-PC to iMac
-2009 (pre-minidisplay port) dvi to imac.
I need it to be dual link dvi because I want to use it at max resolution.
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Jul 10, 2009
I'm looking for a external monitor that is compairable in brightness as my iMac's screen. The brand needs to be Samsung, and the look of the Samsung moniter I would prefer to look like the examples below. Why? Because I want it to match my TV. I'm also looking for a small monitor because the space I have is pretty small and I dont want to have to move my iMac and look at it at a angle. I currently have a Samsung SyncMaster 906BW with a 1440 x 900 60hz resolution and its VERY dull compared to my iMac and its at 100% brightness and 85% contrast. Here are some of the screens I'm looking at so far, would they be close to as bright as my iMac's screen?
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Aug 21, 2009
I want to run an Imac and an external Monitor, but I want to use the complete graphics power on the external Monitor, so no mirroring of the displays. Is there any way to shut down the internal display?
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Aug 20, 2010
Is there a way to disable the external monitor? I don't want to have to unplug it every time I want to disable it... There must be a way. What options do we have?
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Aug 15, 2008
On my 2008 24inch iMac the screen has a problem ( dead pixels ) and I will get it replaced in the future , in the mean time I have a very nice large external monitor connected to the iMac which I use ok, what I am looking for is a way at first when booting up , to be able to see both the iMac's screen and the external monitors screen, then some how shut off / make blank the iMacs screen only leaving the external monitor on ?
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May 14, 2012
Can I use an iMac 2009 as external monitor for a MacBook Air 2010?
Info:
MacBook Air, Mac OS X (10.6.8)
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Oct 14, 2007
Is there a way to hook up a external monitor to the 24" iMac as in the same way you can do with a macbook pro? Reason being is that I want the 24" iMac and I want to do photo editing. I'm getting mixed reviews on it due to the glossy screen. Some say yes and others say no. I have a 21 inch LCD display that I am not using. I was wondering if I can use it when I need to edit photos. I can't afford the macbook pro that I want so my next option is the iMac.
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Feb 4, 2010
I have a 24 inch imac and i am connecting the viewsonic VG921m (19'') monitor using the mini-dvi port. The external monitor appears dull (whites have a yellow tint) Is there a way to match up the display to look like mac? I am using the monitor next to my iMac and its currently distracting as its displaying same colors in different tone.
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May 4, 2010
I'm in the process of replacing my MBP with an early 2k9 iMac as my DAW machine. I'm shopping around for external monitors, and I'm leaning a 27" monitor that natively displays 2048 x 1152. My question is, if I get a dual link dvi cable- will my iMac be able to display this resolution on an external monitor?
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Sep 5, 2009
I have an iMac and a mbp, both intels & running 10.5.8. I work on the road and wish to have both computers contain the same information with out over writing the new files. i.e. - I work on a word file at home, work on the same file at the office and then record my band before heading home. When I get home, I want my home computer to have the updated word file and back up the logic audio files. The other part of this is so that my iPhone will sync with both computers. MobileMe was kind of the right path but I didn't quite do the trick. How do I do that?
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Nov 24, 2009
I have taking the plunge and bought a new i7 iMac. On my current machine I have 2 WD external USB drives (1TB) in RAID mirror, done through Disk Utilities. I am looking for advice on the correct way to move this to my new machine. Do I simply plug them in, and OSX does the rest? The data is very valuable, and I don't really have enough space to copy it all / back it up before i move it. Being a mirror, it is essentially is my backup.
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Jan 31, 2010
I have a G4 powerbook with an LCD that only displays the top 25% of the screen. I've been using an external monitor with it just fine. Today, I reinstalled the OS and ran into a problem. The main OSX startup menu (you know, where it asks for your location, timezone, personal info, etc) is prompting me for information, and I can't see the forms to fill them in! The external monitor defaults to "extended" as opposed to "mirrored", and the forms are embedded, meaning I can't drag them over to my external monitor. Obviously, if I can't fill out these forms and get to the desktop, the laptop is completely useless.
Does anyone know how to force the external monitor to be "mirrored" from startup? Is there a keycommand?
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