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Old Feb 10, 2013, 01:27 PM   #1
ApplesAOranges
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How to turn off iMac display while watching a movie from HD TV?

I just canīt seem to figure this out. All I can think is putting something physically in front of the display, which is just stupid!

Even my MBA and rMBP can do this by dimming the backlight all the way down or just closing the lid and putting them to sleep, the movie will still keep rolling on the HD TV.

Did Apple folkīs super brains miss this feature or are they leaving this out intentionally just to annoy us?
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Old Feb 11, 2013, 06:30 AM   #2
trustever
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In system preference, energy saving, you can specify that the display goes to sleep after 1 minute but the computer does not go to sleep ever.
This way your screen will be black after a min of not use and which ever you are streeming to the HD TV should keep running..
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Old Feb 11, 2013, 06:50 AM   #3
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Old Feb 11, 2013, 07:44 AM   #4
ApplesAOranges
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Sorry, but these solutions donīt work. Both screens will be shut off.

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This way your screen will be black after a min of not use and which ever you are streeming to the HD TV should keep running..
It doesnīt.
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Old Feb 11, 2013, 09:51 AM   #5
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Turn the brightness down.
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Old Feb 11, 2013, 02:12 PM   #6
ApplesAOranges
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Turn the brightness down.
Like I said in my original post, that doesnīt work either. It works with MBA and MBP, but not with iMacs. The brightness wonīt go all the way down, not even close. In fact I keep the brightness all the time with my 24" iMac already around 5-10%.
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Old Feb 11, 2013, 03:32 PM   #7
seble
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Trying using the Shift + Control + Eject trick, this turns off the iMac screen. Not sure of its behaviour when coupled with another monitor though but it's worth a try.
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Old Feb 11, 2013, 08:59 PM   #8
adnbek
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Originally Posted by ApplesAOranges View Post
Sorry, but these solutions donīt work. Both screens will be shut off.

It doesnīt.
If plugged in physically to a TV, I guess that's true. Any chance you have an Apple TV? You can airplay the video instead if you do, provided your iMac is a 2011 or newer model.
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Old Feb 11, 2013, 09:10 PM   #9
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the only way to do it is by dimming the iMac screen, I researched this extensively for a while. There is software that enables you to completely dim it (just remember the shortcut to exit the mode before you do it though) but the backlights will still be on.
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Old Feb 11, 2013, 09:21 PM   #10
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delete, wrong thread
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Old Feb 12, 2013, 04:41 AM   #11
ApplesAOranges
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Originally Posted by seble View Post
Trying using the Shift + Control + Eject trick, this turns off the iMac screen. Not sure of its behaviour when coupled with another monitor though but it's worth a try.
Would be perfect, but it turns the HDTV off as well.
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Old Feb 12, 2013, 11:12 AM   #12
seble
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Would be perfect, but it turns the HDTV off as well.
Sorry to hear that keep trying, I'm sure there is an app or mod out there for osx that allows this, let us know if you do find anything though as I am interested in this myself
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Old Feb 12, 2013, 06:56 PM   #13
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I too investigated this. Not possible at the moment. Someone mentioned possibly a terminal tweak, but I found no solution.
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Old Feb 13, 2013, 03:03 AM   #14
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I too investigated this. Not possible at the moment. Someone mentioned possibly a terminal tweak, but I found no solution.
This is so sad. How can Apple miss such a simple feature?

I guess Iīll be throwing a shirt or towel on top of the iMac every time when Iīm watching a movie and risk it overheating.
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Old Feb 26, 2013, 02:25 PM   #15
ApplesAOranges
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Could Apple give us this feature with an update possibly? Itīs a bit ridiculous that I canīt do simple thing like this.

Iīm sure they donīt want us either hanging our t-shirts, towels or whatever on top of our iMacs? Or maybe they do, so the iMacs will break sooner and we have to buy newer ones?
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Old Apr 23, 2014, 04:20 PM   #16
biancarocker
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ApplesAOranges,

Don't know if you still need this, but I found an app that does exactly what you want: http://www.charcoaldesign.co.uk/shades

I am using it to watch movies from imac to apppletv. It doesn't turn off the lights, but increases the color you choose to tint the screen. So, if you choose black, it will tint the screen monitor with black, still, using light to do it. Not perfect, but, better than nothing.

Last edited by biancarocker; Apr 23, 2014 at 04:34 PM.
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