IMac :: How To Switch Off Screen And Only Use An External Monitor
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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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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Mar 17, 2009
I have a MacBook Pro. I see that the new iMacs have a mini displayport input so that the 27" screen can be used with my MacBook Pro. I'm wondering how this works? Since there is obviously no button to push, how exactly do you switch between the iMac and the MacBook Pro displaying on-screen?
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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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Apr 17, 2010
im not 100% sure this is the right area to post this in but i have a 15 or so inch hp lcd monitor i wanted to use as a second screen for my imac via vga, so i was wondering if that kvm switch would alow me to have this setup
imac - (vga adapter) - Kvm switch - moniter and surround sound / xbox 360 - (vga adapter)
and the second part is... it says it is powered by bus does that mean it would be powered by the moniters or what?is that a bad idea? will it strain my imac or what.
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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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Feb 2, 2009
we are trying to hook up our TV as a secondary monitor (for hulu, netflix, etc) but it defaults as the primary monitor. We would like to keep the imac as the primary monitor, and have the TV as a secondary, but cannot figure out how to do it! The only way we can get the imac back to primary status is if we use mirror mode. Once we take it off mirror mode, the TV becomes the primary monitor again, and there appears to be no way of switching it in OSX display preferences.
I've done similar hookups with my laptop, and the TV defaults as the secondary monitor. Why isn't this happening with our iMac? Any ideas?
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Aug 16, 2010
Hoping someone can help - my imac (approx 15-18 months old , intel) won't start.
Last night on shutting down DPP (canon Digital image software) was hanging and system asked me if I wanted to force quit it...sadly I had switched off my bluetooth mouse and , as usually once mouse turned off switching it back on it never re connects - why did I buy the bletooth mouse and keyboard ?, so I could not confirm yes force quit - is there no way of selecting with keyboard like there is in windows ?
So I switched off at power switch. Tried to re switch on - grey screen came up, apple logo, the little timer circle but after a while timer circle stopped and nothing further happened.
have tried several more times and now don't even get timer.
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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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Mar 8, 2008
I have my MBP hooked up to my TV. I was trying to get Front Row to run on my external monitor without having to move the Menu Bar over, but I quickly realized that was not going to be possible. My next idea was to play the videos straight from iTunes and just make them Full Screen. Having the videos playing over there works okay (my MBP screen is still normal), but as soon as I press Full Screen my MBP goes black. Is there any way to run full screen iTunes on my TV without losing functionality from my MBP?
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Dec 15, 2008
I'm thinking of buying a 15" NEC AccuSync Touchscreen LCD Monitor from [URL]
Who was a touch screen monitor?
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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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Aug 26, 2008
I have screens from 2 dead ibooks is it possible to turn then into external monitors?
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Apr 23, 2009
I work on the macbook between 90min-2 hours throughout the day. At home, I hook up to a twenty-four inch monitor that I had calibrated through a Windows based system and complete my work. Now the files that I am working on are being processed through the macbook but viewed on the external monitor. I don't really care about the calibration of the macbook because the work that I am doing on it without the external monitor is really not color related i.e. removing scabs off of children, removing hair off of the face ect, but I need the final image to be accurate before it is sent off to the lab.
So, what do I need to do? Calibrate the macbook and the monitor or just the monitor and if just the monitor can anyone walk me through this? I know I could "search" but switching over from windows has been an experience and honestly, I am tired of "searching". Speaking of searching, I am still trying to figure out a way to sync my Dell x50v to the macbook, anyone? I know the x50v is old but it is the most solid piece of windows hardware I have ever owned and it still "just works".
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Jul 20, 2009
I have a white MB (early 2008). I'm going to be getting an external monitor soon with a native resolution of 1920x1200 - the highest that the MB's Intel GMA X3100 will support. I know that I can open System Preferences > Display and then click the little menubar and drag it to the other monitor to make it the primary. Here is the thing: I want to just use my 24" monitor and not use the MB's screen with it (I have an external keyboard and mouse).
Should I...
1. Use the two displays as an extended desktop and then (leave the MacBook lid open) just turn the brightness on the MB all the way off so the screen is black (no back light)?
or...
2. Just close the MacBook and use it in clam shell mode? I watch Hulu and YouTube a lot which causes the CPU load to increase and fans to spin up.... do I have to worry about over heating? I would be using the 24" monitor exclusively all the time and then take the MB when I go to class. Will this just ruin my MB pre-maturely?
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Oct 28, 2009
I have the new macbook unibody, and use it from time to time to dsiplay things to an external montior, plasma, projector, etc. Using a mini-display adapter to a converter to get s-video was a challenge, but I figured it out. I have used this many times, as I am a DJ and need s-video out to connect to most devices.I was at an event saturday night, and the display on the external device (projector) kept displaying my desktop, NOT the external feed.
It was NOT set up for mirroring, as it seems like the displays were 'switched'. I had my desktop on the projector, and my external on my macbook pro monitor. I tried to fool around with arrangement and resolution, but to no avail. I understand that sometimes you have to drag your source to the right (of left) to get it to display on the external, and this was done, but it was still reversed.I know it was something simple to get the 2 switched back to the way it should be, but I could not figure it out. Any advice? None of my apple buds can figure this out.
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Dec 4, 2009
How can I watch a movie on my external monitor in full screen and still work on my Macbook Pro? Every time I go back to work on my Macbook I lose the full screen viewing on my external monitor.
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Dec 19, 2009
My 2006 mMcBook is dead and parted out. I still have the case and screen, but no HD, RAM, battery, or working logic board. How can I take the screen and make myself an external monitor out of it? I am presuming it's possible. I can solder a little and I love messing with parts from radio shack. So, has anyone heard of this? I tried googling it but couldn't find any search terms that brought me what I wanted.
Basically, I want to convert the video cable to DVI or even better, Display Port, and then figure out how to solder in a power source to just plug into a wall (since I'm assuming it'd be too big of a job to have it powered off of the FW800 or USB from the macbook pro). Is this possible? Since the computer is dead and gone, it won't hurt to experiment. Anyone have any links or guides to this?
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Dec 27, 2009
I just recently (a month ago) bought my first MBP 13" unibody. When I connect it to my TV (Panasonic VIERA G10 Series TC-P46G10 46-Inch 1080p Plasma HDTV), the image is bigger than the screen, tried to switch resolutions with no success. The connection is minidisplay port to HDMI.
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Apr 13, 2010
here we are with SnowLeopard 10.6.x and it still has no automatic shutting off laptop screen (Macbook Pro) when hooking up external monitor????Why do i have to close the lid, let my laptop go to sleep, wake it up, re-enter password, have my internet shut down and re-activate and all other processes just to shut down my MBP screen when hooked up to my cinema display???Hell even Windows Vista/ 7 does it automatically when i tested it via Bootcamp, requiring no closing of the lid or halting any processes or the internet.
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Jul 15, 2010
I am attempting to use an external DVI monitor using the mini port port and the mini port DVI adapter sold by apple. However the screen display on the external monitor does not match the Mac book display. All I get is a color Mac opening screen with no icons.apparently there is more to getting an external monitor going then just plugging it in.
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May 9, 2012
I have a 27" iMac and have connected a Philips 160e as a pallette monitor via a Mini Display Port to VGA adaptor. the iMac sees it but auto picks the wrong resolution 1280 x 1024 (stretched) instead of the Philips' 1366 x 768 @ 60Hz.
If I try to change the resolution the screen goes black which is symptomatic of using the wrong refresh rate, and of course I can make no further adjustments. esc does not get me out of the black screen.Â
What is worse the iMac seems to remember the wrong resolution/refresh rate after restarts.Â
I have tried Safe Mode (it stayed black) and booting off an external hard drive into another system (back into black if I change the display settings).
I have gone into System Preferences > Display > Color >unchecked 'Show profiles for this display only' > selected > Philips 160E in the list
It only contains .icc profile information, which I suppose is to be expected but is the only access I can find to any specific model data. The same display works fine with an older 24" iMac, using a different adaptor because of the different display port.
Somewhere OSX is storing the settings for the external monitor, I'd love to be able to trash it or change it back.
Info:
iMac, Mac OS X (10.7.3), The closest you'll ever get to there, is here.
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Oct 1, 2010
I just hooked up my macbook pro to an external monitor. Now, when I watch videos and what not, they will ONLY work in full screen. If I want to watch the video in a window, the sound will play but video does not. It may have something to do with Flash?
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Mar 25, 2012
I have been having some problems with my Macbook Pro. I have a new BenQ screen connected to it via the Mini Display Port to VGA adapter from Apple. No matter what I do, I cant seem to be able to change the resolution to anything higher than 1280x1024, which is a pretty stupid resolution to have on a 27'' monitor. Sometimes when I plug it in, it gives me the option to change the resolution to 1920x1080.
But when I select it, the screen goes black and displays the message "No signal detected". Now, as it happens, I have a copy of windows installed on a partition of my hdd, and the screen works flawlessly on it. full HD with 75 Hertz. So that shows that it is not a hardware problem, it has to be a software problem. I tried everything, including reinstalling OS X, and deleting the "windowserver" files. no success.
Info:
MacBook Pro, Mac OS X (10.6.8)
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May 11, 2012
I have a early 2011 MacBook Pro 13" running the latest version of Lion. I have been using my MacBook with an external monitor since I brought it in 2011 and have had no problems with connecting it to my external monitor. Connected via mini display port DVI adapter and a DVI cable to a Philips monitor.
Two days ago when I plugged the MacBook back in to the monitor I connected and but now only displays a black screen, I can move the mouse off the MacBook screen and over to the external monitor and back but it is not displayed on the monitor. I have tried connecting other devices to the monitor and they work fine.
Info:
MacBook Pro (13-inch Early 2011), Mac OS X (10.7.4)
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Jun 2, 2014
Recently I connected my macbook air (bought it in 2011, now on Version 10.9.3) with a Panasonic TV (TX-32LM70F) via Thunderbolt to HDMI adapter. After I disconnected the external device, the macbook air's screen still worked normal, but when i restarted it, it was only flickering grey. Â
I found out that it actually boots normally and i can use it with an external monitor (in fact I am using it right now), but that the built-in macbook screen simply doesn't work anymore. Â
I tried to restart while connected and while disconnected to an external screen, I have reset the SMC Controller, I have reset the PRAM Controller, but it hasn't changed. Â
This is actually the second time something like this happenend (it was another external device i connected it to), and last time, about a few weeks ago, it just worked again after a few days for no reason, all i did was wait until all energy was gone from the battery and the reload it. So might it be a battery problem? Or is it some controller i don't know? It was the same phenomenon two times: connect to external monitor - disconnect - built-in screen still works - restart - built in screen only flickers grey - macbook still boots and works fine with the very external monitor that might have caused the problem. Â
Info:
MacBook Air, OS X Mavericks (10.9.3)
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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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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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