Secondary display annoyance

I've been using LR for a long time, but only recently started using it with two displays--which has been great, except for an annoying problem I can't solve. I'm running LR on a Macbook Pro, and using an NEC as secondary monitor. I keep getting a small window on the Macbook when using both displays. It says, "lightroom-secondary display on top." I can get rid of it by cycling the F key, but it keeps coming back on its own--like if I switch to a different app and come back to LR, it will be there.
I don't think the window is the secondary preview, because when I enable that I get a different, smaller window. If anyone can help, I'd appreciate it.

I have exactly the same problem. Main display on rMBP, secondary display on external Samsung LED and the annoying visitor second secondary display also on rMBP screen:
The window does NOT close when clicking the close button in upper left of window. Only by closing the secondary window through the menu can I temporarily get rid of it.
Extremely irritating!

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Secondary display does not work with Windows...

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Still no luck... Has anyone else experienced this problem while running Windows through bootcamp? Is it possible there's a compatibility issue with XP vs. Vista? The display is new and bears the mark "Works with Windows Vista". Could that mean it wont work with XP? I obviously don't use Windows that often, but seeing as I purchased the monitor as a secondary display, it would be nice to be able to put it to use in Windows too. Thanks anybody...

How to connect new Macbook pro 2014 to iMac 2010 for a secondary display

I have a new Macbook Pro 2014 and an old iMac 2010. How can I connect them to have an additional secondary display? I thought I would need a thunderbolt cable with a Thunderbolt to Mini DisplayPort adapter but I can't find that. There's lots of options and I don't understand what would be best.
Macbook Pro 2014
iMac 2010
Any help would be much appreciated!

Hi Nathaniel,
Thunderbolt is another way of calling it a Mini Displayport, thunderbolt is just faster and has more usage with other products (i.e. hdds, displays etc.) You can hook up a thunderbolt to a mini-display port because both are the same size and serve the same function. Just don't connect anything to the display port on the iMac other than a computer.
Kind Regards,
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MacBook (2006) HDTV Secondary Display Issue (no streaming video)

I've searched the discussions as thoroughly as I could before posting. I do not have the same issues as many others connecting their Macs to HDTVs for primary or secondary display.
I recently bought a Sony Bravia (KDL-32EX710) and displays the desktop beautifully at 1080p with just the Mini-DVI to VGA cable. However, the only thing it does not display, without a workaround, is streaming video from websites like YouTube, various Gawker media sites and similar sites. For example, going to YouTube loads the entire page with playlists, comments and the audio comes through but nothing but a black box where the video should be (controls are also hidden).
To view videos, I have to drag the Safari window to the MacBook's display to start the video then move it back over to the secondary display to view it. Or, I have to enable the video to be viewed in fullscreen (usually by chance) to be able to see the video.
Watching videos from the local/network drives are fine. Watching streaming videos from Netflix are fine (via Safari). Does this seem like a Flash issue as the problem videos seem to depend on Flash?
Message was edited by: fantastikot

It seems updating Flash (for Safari, Firefox and Chrome) did the trick.

How can I use my rMBP as a secondary display for my iMac using thunderbolt?

Based on this thread, it's not possible: https://discussions.apple.com/message/19207767
But, I'm stubborn and refuse to believe that. Maybe they've released a software update (e.g., in Mountain Lion) that has since made this possible? Maybe there is an app that allows for this?
Note that I don't want a solution that involves network hacks... this is at work, and I'd rather not slow down the network for others. And I'm not interested in the reverse setup (i.e., using my iMac as a secondary display for my rMBP).
iMac: 27-inch, Late 2012. NVIDIA GeForce GTX 660M 512 MB. OS X 10.8.4.
rMBP: Retina, Mid 2012 (15" I think). NVIDIA GeForce GT 650M 1024 MB. OS X 10.8.4.

It's not possible. You can use the iMac as a display for the MBP, but the reverse is not possible. The MBP does not have Target Display Mode as a feature and no third-party app nor hack can enable something that doesn't exist. The only way to accomplish this will be one of the network solutions.
Regards.

Using a 20" iMac as secondary display for another iMac.

I have an older Intel 20" iMac that I'd like to use as a secondary display for a newer 20" iMac. Is that possible?
In my dreamworld, I'd still be able to use the old iMac as a second machine somehow. Ideally I'd be able to leave it running and switch over to it somehow. Am I dreaming or is this somehow possible?

My son no longer uses his old "snowball" iMac (2003) and I may try this as it would a nice (17") second screen.

How can I select the secondary display in a multiple display setup?

I am using a 2012 Mac mini with Thunderbolt and HDMI video outputs to run the multimedia display at our church. The Thunderbolt port drives a Dell Monitor acting as our primary display. The HDMI output is set as the secondary display and goes into a splitter so the signal can go either to a small TV beside us in the balcony or into an HDMI selector which then feeds into another splitter which delivers signal to both a 80" TV on the balcony wall and to a Peerless HD flow which transmits the signal to TVs up front. The issue is the mac will register three possible options for the secondary display (the small monitor TV, the Sharp TV on the back wall, or the HD flow system). I need it to consistently select one of these, preferably the HD flow system, since that will become bogged down with resolutions higher than 720 p. Can anyone lend me some advice? I've included a simple diagram of the situation. Thanks!

Thanks. Bummer about the image. It really helps make sense of the layout. I can see it, but that doesn't really help anyone else Do you know if the mac "remembers" the last used display and selects that one or what would be the parameters in selecting which display it actually settles on among the choices? Is the first to 'wake' or the last? We have changed the startup sequence and can't seem to get consistent results.

Can I use a secondary display via wireless router?

I plugged a secondary display into my wireless router (Belkin). The display has several USB ports on it. I filled those USB ports with:
External hard drive (Toshiba)
Printer (Epson)
Mouse (??)
Keyboard (Dell)
The iMac found the hard drive, printer, mouse and keyboard instantly. I can access the hard drive perfectly from the iMac. The printer works perfectly from the iMac. The mouse also works perfectly from the iMac. The keyboard doesn't work yet, but at least it shows up on the iMac as an option.
Oddly the display itself does not seem to be recognized by the iMac. Any idea how to use the secondary disply via the wifi connection? The secondary monitor is a Dell.
Kris in NY

Well there is an "Air Display" app that will let one iMac use another device as a WIRELESS secondary display monitor (http://avatron.com/apps/air-display). What I keep finding is that the secondary display device seems to be a complete device (hard drive, flash memory, software, etc).
So an iMac CAN use another iMac or iPod or PC or Tablet as a secondary, wireless display device.
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The secondary display has its own power source and is powered on. As I said the secondary display has several peripherals connected to it that can all be used wirelessly by the iMac. Only the display device between the wifi router and the peripherals cannot be detected. All the other hardware came on-line instantly.
Kris in NY

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Phil
P.S. I should mention that the image quality at 1:1 zoom in Library Module's Secondary Display is not only worse than the main Library screen, it's also significantly worse (less sharp) than seen in the Develop module--and that's certainly not unexpected.

>Gordon McKinney:What happens is the second display doesn't render a 1:1 for optimal sharpness.
For me it isn't just sharpness. I can make a change that is fairly radical and have it show up immediately in the main monitor--both in the navigation panel and in the main display panel. The image on the 2nd monitor remains unchanged.
If I then use the history panel to move back to the previous state and then re-select the final state the image on the secondary display
usually, not always gets updated. Sometimes it takes a 2nd or a third cycle from previous to latest history state. This 'missed update' in the 2nd monitor doesn't happen 100% of the time, but it does happen quite often.
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I keep Mail open on my MacBook Pro and prior to Mavericks items would open on my 27" secondary display. How can I make this happen in Mavericks?

I keep Mail open on my MacBook Pro and prior to Mavericks items would open on my 27" secondary display. How can I make this happen in Mavericks?

In System Preferences > Mission Control, uncheck mark Displays have seperate windows. This should bring you back to the secondary display you had before the upgrade. You may have to open Mail, the first time and place it on your secondary display. You also won't have the advantages of the dock and menus on the secondary display.
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Any solutions!?!
Additionally, "extended desktop" for my Airplay display worked properly when Mavericks was first released.

Try this:
Click on the Apple TV Icon on the top toolbar
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Using a scrapped iMac as a Secondary Display

OK, my iMac's busted and I want the hard drive to use as an ext hard drive for my MBP. I have no idea how to do this or even if it is possible.
Also, if there is a way of doing this and being able to use the screen as a secondary display for my MBP, that would be great.
The computer doesn't turn on most of the time, and if it does it turns off before I even have a chance to steal a file over airport. I need some files from that hard drive and would love to use it as a display.

Remove the hard drive if possible(instructions are available here and here as PDFs for some iMac G5 models), and put it in an enclosure. You cannot use a nonfunctional Mac as a display for another computer.
(38124)

How can I add (not mirroring) my TV as a secondary display to my Macbook using a wireless device ?

Hi,
I would like to use a wireless device to add my TV as a secondary display to my Macbook. Actualy I use a HDMI cable but it's not very friendly to move with it in some place of my sitting room .
Everythings I looked provide only a mirroring display ... But this is not what I'm looking for.
Thanks for your help !

that sounds like it is your router rather then your TV connection, but either way, the way to display your iPad is via the Composite/Digital AV conection cables then your TV will see the iPad as another connected item via the given port on your tv.
See http://store.apple.com/us/browse/home/shop_ipad/ipad_accessories/cables_docks
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For some peculiar reason, my desktop pictures do NOT change / rotate on my secondary display.
I have a MacBook Pro 15" (Late 2007) running Snow Leopard 10.6.2 and I have dual displays. My primary display (the MBP screen) DOES change / rotate picture every minute, but I want my secondary display to do the same.
It seems that restarting does fix it, but only temporarily. I think it might have to do with plugging/unplugging the secondary display and sometimes if it's working, I disconnect and reconnect the monitor and then the pictures stop rotating.
All my desktop picture settings are correct in System Preferences. I tried unchecking then rechecking the "Change picture:" checkmark, but that doesn't fix anything. I also tried clicking on different folders in the left column of the Pref Pane, then clicking back on my chosen desktop pictures folder.
Any help would be greatly appreciated! Thank you!

I discovered that for this particular file if you check the "random order" box under Desktop preferences, then the pictures will rotate like the rest of the photo files in the collection

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Ah - thank you very much for reminding me about that!
I'd seen that option a couple of days back but hadn't pursued it because I didn't want to do the logout/login required to activate the change at that time. Since then I've been putting up with the secondary menu bar and - more significantly - apps which used to exclusively open/live on the secondary display defaulting to the primary display. That was really beginning to bug me and has also been solved by this change so, thanks again for the reminder.

Secondary display annoyance

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