Shutdown native display when mirroring to ATV?

Is there a way, to shutdown the display of my iMac when I am mirroring the desktop to my ATV 3gen?

To your question, "wont clamshell mode require me to have a keyboard and/or a mouse connected for it to work?" No. That is not a requirement. You only need some kind of USB activity to wake the MB. So if you close the lid to put the MB to sleep and then plug in some USB device, like a USB flash memory drive, the MB will wake up and only the external display will be active. After that happens, you can open the lid on the MB and use its keyboard and trackpad. The MB screen will remain off. By the way, you need to have the AC adapter plugged into the MB for this to work. It won't work from battery power.
If you can choose different resolutions for the two screens, that is not mirror mode. That is dual video mode.

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Mac Pro 2008 with Radeon 4870 video useable resolution on DVI limited to size of minidisplay port VGA when displays are mirrored. Did not have this problem until I plugged in new monitor (miniDisplayport), but now it affects even going back original mon

Have been using the Mac Pro since 2008. Changed to a Radeon 4870 card early this year. Everything was fine.
Running an old KDS monitor from minidisplay port to VGA and a 1400x1050 projector from DVI out. Have used the
two mirrored the entire time with no trouble.
The old kDS monitor looked like it was starting to go bad so I got another monitor. Don't have much room
so it's a 14inchwith widescreen 1328x768 display. Hooked that to minidisplay port as it only has a VGA input.
Immediately the LCD display took over and restricted the output to the projector.
If I turn off mirroring, I can get projector back to normal. But this makes running programs a lot more difficult.
It worked fine with mirroring on before the monitor change. Except going back to old monitor,
now it is affecting things. I pull up display preferences. If the displays are mirrored, even setting the projector
to 1400x1050, it says "usuable resolution 1280x1024." It didn't use to do this at all.
Tried reseting NVRAM - no result.
Any suggestions would be helpful. Just looking at the image on the projector, I don't see any difference from
before.

UPDATE:
As noted in the first post, both of these newer USB DAC work fine at 24/96 on my wife's iMac, so it's clear that they didn't both become defective when I connected them to the Macbook Pro at the same time.
Resetting the Macbook Pro PRAM didn't help, so I removed the hard shell laptop case to get to the battery and remove it, then reset the SMC. After that I could use the original DAC at 24/96 again, but only IF it was plugged into the rear USB port. If I plugged it into the front USB port then the sound was garbled and filled with noise. This was a vast improvement over no sound at all.
Then I switched to the replacement/updated DAC, but I got no sound at all from either USB port at any bit-rate. And returning to the original DAC again now results in no sound again.
Sigh... I will reset the PRAM and SMC again, and see how far I can get with this. I'd still love some help. Thanks!

Quick way to change "Optimize for" setting when "mirror displays" is on?

Is there a quick way to change "Optimize for" setting when "mirror displays" is on?
I have two displays on my Mac Mini for totally different areas; I can't see the first monitor when I'm on the second. One is 1280x1024, one is 1920x1200. As I switch fairly often I'm wondering if there is a built-in or 3rd-party-utility way to quickly toggle the "optimize for" setting that is under "System Preferences" -> "Displays" -> "Display" tab -> "Optimize for:" dropdown box.
As Apple sadly doesn't make a all-in-one keyboard / mouse - need one as one of the monitors is used for just a very comfy chair, so keyboard is on my lap - I'm using an Lenovo ThinkPad USB Travel Keyboard, model SK-8855, and some key cobinations, esp. with function keys, seem not to work on it. So something from the desktop context menu or that allows you to set the hotkey would be preferable.
Thanks for any help,
-DJBC

I'm thinking that, Display Menu from the Mac App Store will help.

Prevent mirroring of displays when connecting to a new external monitor

Hi. Not sure whether this is a MacBook Pro issue or a 10.4.5 issue, but I'm sure my old 17" G4 didn't do this...
My MacBook Pro spends much of its time connected to a Dell flat panel display. Mirroring is turned off, and the computer always remembers not to mirror.
However, I do a lot of presentations, and therefore connect the MBP to other people's data projectors with reasonable regularity. Every time I plug in to one of these data projectors, the MBP mirrors the display, and drops its own resolution down - usually to 800x600. I then need to turn off mirroring before increasing the resolution of both displays back up to whatever they can cope with...
Is there a way to change the default behaviour, so that displays are never mirrored unless I explicitly ask for them to be by selecting the 'Mirror Displays' check box on the Arrangement tab of the Displays system preference?
MacBook Pro Mac OS X (10.4.5)

Try pressing F7 after you connect to the external display. This should solve your issue. Also, in the Display Preferences you can select to show the display icon next to your volume, airport, etc. When you do this you can select one resolution for your computer and another for your external display.
Hope this helps

Apple TV jumping when mirroring

Hi,
We've had our Apple TV about a year and up until now it has been working fine. Recently when mirroring to the big screen the image and audio starts to jump but when we play the video from a file on our laptop it works fine, it just dislikes being mirrored for some reason. Our internet signal is very good in our house and we have only two laptops demanding our bandwith, can you please advise us what to do? We've tried updating but there are no updates on the Apple TV. As I say, this is only a recent problem but it does mean we can't mirror anything on to our TV.

That will be due to the local network, internet connection isn't relevant. Mirroring requires more resources as it is sending your full computer display in realtime. Issues can come at any time.
If on wifi try connecting ATV via Ethernet. Make sure there is no there activity (other streaming, network backups etc)
To see a status of your network go to istumbler or similar to get a report. Look for signal strength, noise, nearby networks

I just brought a brand new Macbook pro retina display, when i connect it to my apple tv through airplay its too slow and when it try to play a movie apply tv is always a minute or 2 behind. How can i fix this?

I just brought a brand new Macbook pro retina display, when i connect it to my apple tv through airplay its too slow and when it try to play a movie apply tv is always a minute or 2 behind. How can i fix this?

Hello HanaAmer1,
We've an article which provides troubleshooting steps that can help get AirPlay workign correctly.
iTunes: Troubleshooting AirPlay and AirPlay Mirroring
http://support.apple.com/kb/TS5209
Cheers,
Allen

Apple TV 2 choppy video playback when mirroring from Macbook Pro (Yosemite) and Macbook Air (Yosemite) but not iOS devices

Video playback is choppy (cuts out every 30-45 seconds) when air playing from both my MacBook Air 1.3 GHz Intel Core i5 running Yosemite and my husbands new MacBook Pro, but runs perfectly when mirroring from any of our iOS devices (iPhone 6+, iPad mini 3, etc.) We have Apple TV 2. This problem just started a few weeks ago, was working fine around Christmas. The problem seems to have coincidentally started right after our son tried plugging in and setting up his Chromecast on our tv. I disconnected the Chromecast, but we still have the problem. All of our software if up to date and I've tried disconnecting blue tooth, we do not have a microwave and our wifi network has a very strong signal. We have an Airport Extreme base station. Is there a solution to our problem?

Hi leahmturner,
I see that you are experiencing an issue with choppiness while AirPlay Mirroring from your computers to your Apple TV. I have an article that contains some helpful troubleshooting steps for you regarding this issue:
About AirPlay Mirroring in OS X - Apple Support
http://support.apple.com/en-us/HT201343
Optimizing image quality
Resolution matching modes
You can choose between two desktop resolution matching modes that let you select which display will have the best image. When AirPlay Mirroring is turned on, select an option under "Match Desktop Size To:" in the AirPlay Mirroring menu extra.
Match Desktop Size To: Apple TV
AirPlay Mirroring changes the desktop resolution to best match your Apple TV, resulting in a 16:9 image that fills the HDTV screen. This setting often produces the sharpest image on the HDTV. The aspect ratio and/or resolution of the built-in Mac display may change to accommodate the Apple TV.
Match Desktop Size To: This Mac
AirPlay Mirroring scales the contents of the desktop to fit on the Apple TV, leaving the resolution of your Mac's display unchanged. Use this setting for the sharpest image on your Mac's display. Depending on your Mac model, the resulting image may not fill the HDTV screen.
Troubleshooting AirPlay Mirroring
If you don't see mirroring options
If your Mac and Apple TV are on the same network, but no AirPlay Mirroring menu appears, your Apple TV may be asleep. Simply press a button on your Apple TV remote to wake it up. After a few seconds, the AirPlay Mirroring menu extra appears. If you still don't see the options you expect, make sure your Apple TV has the current software update installed. Also make sure that you have the "Show mirroring options in the menu bar when available" option selected in the Displays pane of System Preferences.
If the menu bar or Dock is cropped
Some HDTVs have bezels that cover a small percentage of the screen. This can result in a slight cropping of a full-resolution HDTV image. Depending on the HDTV model, AirPlay Mirroring may automatically adjust the picture size to prevent cropping. If you are using OS X Mountain Lion or later, and you see cropping of the menu bar or Dock when using AirPlay Mirroring, toggle the Overscan correction option in Displays preferences.
Minimize video post-processing
HDTVs often apply picture quality enhancements intended to improve the look of film and video sources. In some cases, these enhancements can lead to over-sharpening artifacts when displaying your Mac desktop. Some HDTV models have built-in settings to change or disable the enhancements for use with a computer (computer, presentation, or game modes). Otherwise, the controls for sharpness, detail enhancement and noise reduction can be used to optimize the appearance of the Mac desktop. Consult your HDTV’s manual for guidance on the appropriate settings for use with a computer.
Firewall security settings
If you use a firewall, make sure the following firewall security options have been set to allow AirPlay Mirroring to work:
Choose System Preferences from the Apple menu ().
Click Security & Privacy, then click Firewall.
Click the lock icon to unlock it if it's locked, then type an administrator name and password.
Click Firewall Options.
Deselect (uncheck) the “Block all incoming connections” checkbox.
Select (check) the “Automatically allow signed software to receive incoming connections” checkbox.
Thanks for coming to the Apple Support Communities!
Regards,
Braden

Airplay wont play sound longer than 1 second, except when mirroring my desktop

Hello Support Community,
Running a Macbook Pro i7 Build 13B42 and using a brand new Apple Tv to stream Audio. The macbook pro is wifi and network utility reports 144 mBit/s steady stream. The apple tv is plugged in via ethernet directly to the modem/router. This conection is fine as I use foxtel on demand through the same ethernet cable. All software and firmware is up to date and I have run the troubleshooting list on the apple tv support page.
For some reason, when selecting output source "apple tv" for my audio only, it will stream for less and less time from when I got the apple TV last week. We are down to 1 second, then after 30 seconds or so the airplay request times out and the audio defaults back to my speakers.
HOWEVER what I can't figure out is when display mirroring is turned on, the audio and vision works perfectly. How come I can't airplay just audio without the strem going dead yet when mirroring my desktop I get no dropouts? None. Perfect. It's playing now in fact.
Please Help
~Ben

Anyone? No ideas? Maybe just a shocking product like I should expect these days?

Blurred display when presenting w Powerpoint via external monitor

I have a black MacBook (running Snow Leopard). Since some time when I connect any external monitor (beamer) and click slideshow in Powerpoint 2008, the MacBook display becomes a total blur. This only happens when displays are mirrored in display system prefs.
I basically see the colours of the slides but cannot read a thing. The external monitor shows the presentation correctly.
Any ideas what is causing this strange behaviour would be much appreciated!

Scott,
Many thanks for your answer! If you're right, what do you suggest that I do whenever I have to connect an external beamer/projector?
Of course, it should show up fine on the projector (cuz that's what my audience will see) but I'd like to be able to see it in some form on my laptop display too. Would that be possible?
Thanks,
Hans

How to invoke the shutdown event tracker when running restart-computer

In Windows command shell, it is possible to run shutdown /d to specify a reason code and /c to enter a comment into the shutdown event tracker to log why a shutdown was being performed.
I'm not seeing an equivalent parameter for the restart-computer cmdlet in PowerShell. Is it possible to invoke the shutdown event tracker when running restart-computer?

help restart-computer
says no. There's nothing wrong with using native commands, in a number of cases they are better than what PS provides.
I hope this post has helped!

[svn:fx-4.x] 14837: Changing the way data tips are rendered in when mirrored.

Revision: 14837
Revision: 14837
Author:   [email protected]
Date:     2010-03-18 00:26:27 -0700 (Thu, 18 Mar 2010)
Log Message:
Changing the way data tips are rendered in when mirrored.
Single data tip shows to left in RTL now which shows to right in LTR
Callouts connecting datatips to chart items are also modified.
QE notes:
Doc notes:
Bugs: FLEXDMV-2347 ( Datatips cluterred in bubble chart when layoutDirection=rtl)
FLEXDMV-2348 ( Position of datatips not changing WRT layoutDirection)
Reviewer:
Tests run: checkintests
Is noteworthy for integration:
Ticket Links:
    http://bugs.adobe.com/jira/browse/FLEXDMV-2347
    http://bugs.adobe.com/jira/browse/FLEXDMV-2348
Modified Paths:
    flex/sdk/branches/4.x/frameworks/projects/datavisualization/src/mx/charts/chartClasses/Ch artBase.as

Setting Lightroom's preview size to larger than screen resolution is guaranteed to slow things down. I have a dual monitor system whith Lightroom showing the loupe on one screen and the grid on the other. The screen sizes are 1920x1080 and 2560x1440. Following your practice for previews would bring my system to a crawl and I have an entry level workstation.All my previews are of standard 1024x768 in size. The only delays in viewing come when Lightroom is asked to display an image where there is no preview. Once the preview has been created, browsing is near instantaneous.
I beg to differ! The reason is that a preview can be used for any size, which is smaller than that of the preview. Scaling down a preview can be done with little or not loss in quality compared to getting the full resulution and scale that down. Scaling up is not possible.
In your case, you will not use the previews of 1024x768 at all for full screen display. Instead you will force L3 to create bigger previews the first time you open the photo. You could try this by generating the standard previews for new imported photos before you start browsing. Then try to browse. You will probably get the "Loading" message, which indicates that the preview was not used and another one with higher resolution will be made. Then try the same experiment, setting the size of the standard preview to 2048. If, and only if, the size of your display area is not more than 2048 pixels wide and you display a photo in lanscape orientation, you will be able to browse without delay after generating the standard previews.
If I understand your setup correctly, you display the photos in a window of 2560x1440 pixels. I suspect that only 1:1 previews could be used for that. I think Adobe should increase the maximum size of the previews to a value larger than 2048, so that you are not forced to use only the 1:1 previews.
I agree, that when the previews have been generated, browsing is near instantaneous.

Is it possible to turn off imac display while mirrored display plays video?

I've set up a new 21.5" imac for my parents use in their living room and have connected their 52" lcd tv to the imac as a mirrored display.
One issue that i can't find a solution to is to find a way to turn OFF the imac display when they're watching content on the lcd tv. If they want to watch a film from the imac out to the LCD TV, they want to dim the lights and watch it, but the imac display being on in the dark room is distracting.
Is their any way (3rd party software??) to turn off the imac display while still being able to have the mirrored display running?

You should actually NOT use mirroring, although it would work OK on the 21.5-inch iMac because the screen resolution is identical to 1080p HDTV.
In System Preferences Displays pane Arrangement tab, turn mirroring OFF. This makes the HDTV screen extend the iMac's Desktop. In the diagram on that pane, it shows how the two screen arranged. The edge where they touch is where you can move your mouse cursor from one screen to the other. You can move the two screen around in the diagram, to match how the iMac and HDTV are located in the real world.
In System Preferences Displays pane Display tab, there will be a window for each screen. The 21.5-inch iMac's screen should be set to 1920x1080. The HDTV's screen should be set to 1920x1080 also, if it is a "1080p" HDTV.
To watch video content on the HDTV, first show the video playing in a window. Drag the window to the HDTV screen so that it is completely on that screen. Give the full screen command (usually Command-F). The video will play in full screen mode on the HDTV screen. In most video playing applications, such as DVD Player, QuickTime Player, iTunes, etc., the other screen (the iMac's screen in this case) will go black. It's not OFF, but it will display black.
Note: Some video playing apps have a preference setting for which screen gets the full screen. When playing video content in a browser window (such as YouTube or Hulu), when you go to full screen mode by clicking the +full screen+ button, the other screen will not go black.
As far as I know, there is no way to turn off the iMac display, even with mirroring turned OFF.

HT201335 on macbook pro os x v10.8.3 why does AirPlay Mirroring for ATV shut off by itself? Can the time be adjusted?

AirPlay Mirroring foe ATV shuts off automatically when using my MBP OS X v10.8.3. Is there a setting that allows choices for the length of time before the shut off occurs?

For info about memory pressure:
http://support.apple.com/kb/HT5890
OS X Mavericks: If your Mac runs slowly?
http://support.apple.com/kb/PH13895
Startup in Safe Mode
http://support.apple.com/kb/PH14204
Repair Disk
Steps 1 through 7
http://support.apple.com/kb/PH5836
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".

Ps CS6 13.0.6 and cursor offset when mirroring to projector

Since upgrading to Photoshop v13.0.6 in December I've found that when mirroring the desktop display to a projector in a classroom, the cursor is not alligned with what is actually happening on the screen of the desktop machine or projector screen. This is happening in two computer labs; in one the desktop screen is offset and in the other the desktop is offset. The offset increases proportionally as you go right on the screen, so on the left edge it's hardly noticable, but as you move right it can be over 50 pixels off. See the following pics
Shot of the screen from the projector...
Shot of the desktop display...
This does not happen in the Finder, and seems particular to Photoshop, though I've not tested it in other Adobe programs.
This makes it hard to teach Ps!

It might have something to do with the print menu which always says Range: page 1 to page 2, even though there is only one page worth printing. It's quite illogical to print a second page when only one is there. If I wanted two pages of the same thing that's what copies are for.
As near as I can tell, a range would only be used for an image that doesn't fit on one page. My image is less than 5cm high and less than that wide. (It's the same size as the lit apple logo on the lid of my Mac, which is what the image is of.)
I tried setting and saving the default from range to single, but even then it prints two pages of the same thing both to a physical printer and a PDF file, and when I next print the range is back to page 1 to page 2. This is all without even exiting PS. Do I have to restart PS for the default to take effect?
Why can't I save a default? Is this a directory permission thing, and why don't I get an error that they can't be saved if permissions are the reason?

Scale Apple TV when mirroring?

I use to be able to scale my Apple TV, (using a projector) when mirroring a macbook pro. I could scale both screens by holding the command key and scrolling on my trackpad. After upgrading (either the Apple TV or the Macbook), this feature disappeared.
It is really helpful to scale certain details when teaching. Anyone know how to get this back?
Thanks!

I was having the same issue recently after moving my entire setup to make room for the Christmas Tree.
SUPER lag when mirroring. I tried everything; changing back to ethernet and then back to wireless, resetting the ATV, resetting the router...nothing.
Then I looked at the setup...I noticed that I had placed my ATV directly next to the Time Capsule. I moved the ATV over about 6-8 inches...and it started working flawlessly. I presume the router was clouding up the connection.
Moral of the story, keep your ATV at least 6 inches away from an AirPort / Router.

Shutdown native display when mirroring to ATV?

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