How to detect if external display is present

I need my code to evaluate whether an external display is connected via a mini-display port.
Ideally, I'd like to do this by having a bash command that determines a boolean True/False value for the presence of a file. I'm just not sure what file I should be looking for, presumably something in /dev/
Any suggestions what it should be, or suggestions of a better way to make the determination (anything in applescript, bash, objective-c, or plain-old c will do)?
TIA

This seems to cover the same issue:
http://macscripter.net/viewtopic.php?id=28627
From what I can tell at the moment, a full answer is going to have to be done in Obj-C, but a short Applescript like this will at least get the number of displays connected:
tell application "Image Events"
     launch
          get properties of every display
     quit
end tell

Similar Messages

Since upgrading to yosemite my MacBook Pro want detect my external display

Since upgrading to yosemite my macbook pro won't detect my external display ?

Here's an Apple Discussions thread that might help. It suggests using Disk Utility to repair permissions to fix the following issue, which I just found on my system:
User differs on “private/var/db/displaypolicyd”; should be 0; user is 244.
Group differs on “private/var/db/displaypolicyd”; should be 0; group is 244.
If Repair Permissions doesn't do the trick (because it doesn't stick across sleep and restarts), helpful user "lplacencia" has provided some Terminal commands to patch up the files as needed. With any luck a 10.10.1 update will address this soon!
I haven't had a chance to test this fix yet, but I will do so later tonight. Meanwhile I can report that booting up in Safe Mode didn't make any difference for me. My system includes MacPorts (which includes some running services) so I might need to eliminate that factor, if Disk Utility doesn't help.
A total clean install would have to be my next step. (And I might try that anyway just to see if it's a problem in Yosemite generally.) It's not possible to download the Yosemite full installer from Apple through a public website, but you can save the installer and use it to re-install without having to download it again.

How do I get my Macbook Pro to detect an external display?

Hi there.
I just bought a new MacBook Pro today.
Everything about it is wonderful, except: When I plug an external display into the Thunderbolt port using a Minidisplay port to VGA adapter, it doesn't send a signal to the external monitor. The screen on my Macbook will go blue for a second, and then the windows freeze. The mouse will be movable for a bit (up to a minute), but nothing is clickable. Strangely, it seems as though it's functioning as if there were a second monitor (I can move the mouse off-screen as though it's going over to another display). But then the spinning rainbow wheel starts and never stops. If I unplug the Minidisplay port to VGA adapter, the Macbook will snap back into professional mode and everything works again.
If I try to boot the computer up with the Minidisplay port to VGA adapter already pluged in, it simply won't boot up (I get a gray screen with an apple and nothing more).
I tried using gfxCardStatus set to "discreet only" and I still have this problem. I tried to run a firmware update, but my comp seems to be entirely up-to-date already (just set it up today).
The monitor and adapter seem to be working fine, and function as an external display when pluged into the Mini-DVI port on my 2009 Macbook running Snow Leopard.
I guess my question is, what's causing this? Is this an adapter problem? Like, do I need a special adapter to use with a Thunderbolt port as opposed to the one I'm using which works when pluged into a Mini-DVI port?
Model Name: MacBook Pro
Model Identifier: MacBookPro9,2
Processor Name: Intel Core i7
Processor Speed: 2.9 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 8 GB
Boot ROM Version: MBP91.00D3.B08

The only thing that I can suggest is trying a different adapter - such as this one from Monoprice.
I don't know if that's the root of your problem, though. Does the external monitor have DVI? You could get a Thunderbolt to DVI adapter from Monoprice - here - and give that a shot.
Clinton

Why won't my mac detect an external display?

I have a mac book pro - system OS X 7.3 - but when I plug my rocketfish adapter to HDMI cable to samsung TV - the TV says it gets no signal. I've done everything the experts have said about connecting with the right specific order. But my display doesn't detect any external devices nor does it show any "mirrored" button. It isn't there any more.

How do you know it's not recognized and how is it formatted?

IBook not auto-detecting my external displays any more

I have an iBook G4 which has recently stopped auto-detecting the addition or removal of external displays (both tv and my external monitor). Forcing detection using the system preferences still works. Anyone have any ideas as to how I might fix this problem?
Thanks

Plug the drive into your computer
Open Macintosh HD > Applications > Utilities > Disk Utility
Click on your drive on the left side of the window and then click Repair Disk at the lower right hand corner of the main window
It may take 30-45 minutes for this to complete. Then try the drive again at the USB port of the AirPort Extreme. Be sure to power everything off when you do this and restart things one at a time.
If that does not help, your last resort is to plug the drive into your computer again and open Disk Utility again. This time click Repair Disk Permissions. Then try again.
Are you trying to use Time Machine with the drive attached to the USB port on the AirPort Extreme?
Message was edited by: Bob Timmons

Macbook Pro, how to reset invalid external display resolution?

Hi there. I have a question about the external display configuration.
I recently connected my 2011 Macbook Pro 13" (10.8.2 Mountain Lion) to an external HD-TV using Thunderbolt to VGA adapter. After connecting the TV had 1920x1200 resolution which made the text and everything look very tiny. So I thought I'd lower the resolution a bit. But then I messed up and accidentally changed the resolution and refresh rate for the external display to one that wasn't supported. So the TV went black and gave an error about an invalid resolution. At the same time, on my Macbook screen I had only the background image and display settings dialog. No mouse cursor, no menu bar, no dock etc. So I couldn't do anything.
I disconnected the Thunderbolt adapter and got my Macbook screen back to normal, but when I plugged it in again, the same thing happened. Invalid resolution on TV, just background image and display settings on Macbook screen.
Now, this was just before I was going to give a presentation and it resulted in a very awkward situation with me franticly re-plugging the Thunderbolt adapter and looking just completely clueless In the end I had to borrow my colleague's laptop.
So my question is: when this happens, is there a way I can reset / clear the external display settings back to defaults? They are obviously saved somewhere since replugging the Thunderbolt adapter didn't give me back my original resolution.

A PRAM reset should solve that:
From the article linked above:
Your Mac stores certain settings in a special memory area even if it is turned off. On Intel-based Macs, this is stored in memory known as NVRAM; on PowerPC-based Macs, this is stored in memory known as PRAM.
Information stored in NVRAM / PRAM includes:
Speaker volume
Screen resolution
Startup disk selection
Recent kernel panic information, if any
To reset your PRAM:
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

How tow connect two external displays that are not mirrored and turn of the retina display

Hello,
I have two questions:
1. Is it possible to use two external displays either mirrored or not and turn off the retina display, and if so how it is done?
2. Is it possible to close the MBP and use an external keyboard while using two external displays?
I am using a music production DAW Persons Studio One-2 Pro and it would be great to be able to have this type of a setup.
Thank You,
Breezinabout
Macbook Pro 15" Retina display I7 2,3mz 500gb SSD late 2013 OSX Yosemite 10.10.1

Hi Breezinabout,
The MacBook Pro Late 2013 retina display model will support two external displays. See this specifications page for reference -
MacBook Pro (Retina, 15-inch, Late 2013) - Technical Specifications
Specifically -
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, both at millions of colors
And -
Thunderbolt digital video output
Native Mini DisplayPort output
DVI output using Mini DisplayPort to DVI Adapter (sold separately)
VGA output using Mini DisplayPort to VGA Adapter (sold separately)
Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)
HDMI video output
Support for 1080p resolution at up to 60Hz
Support for 3840-by-2160 resolution at 30Hz
Support for 4096-by-2160 resolution at 24Hz
You would, if you wish, turn off the internal display by closing the MacBook Pro, which is called "closed-clamshell" mode. It requires you to have an external keyboard and mouse. See this article for further information -
How to use your Mac notebook computer in closed-clamshell (display closed) mode with an external display - Apple Support
Thanks for using Apple Support Communities.
Best,
Brett L

6290 how lock keys in external Display

Hi All,
Could you please advice me on how to lock keys in external display?
What Nokia suggested in the manual does not work not either for internal keyboard.
current firmware is: V 03.03 /09-03-07.RM-176
Thanking you in advance

Wow, you got really bunk advice from both Viewsonic and Apple. First off, Viewsonic are wrong. The driver has to come from them, not Apple. Furthermore, it has to be a plug-and-display driver, namely the driver that comes pre-loaded into ROM within the monitor. It sounds like Viewsonic don't have a correct one. This can be confirmed using SwitchRes X.
Second, Apple is way off base to say you can overheat your video card using SRX. What rubbish. The only potential damage to be done with a program like SRX would be to damage the scan circuit in a really old CRT computer monitor or television. There is zero risk with modern, digital displays.
If you install SRX, click on the "Export DDC" button and it will make a human readable text file out of the display driver (EDID) that is inside the Viewsonic. No doubt you will see that there is no mention of 1440 x 900 in the driver. Email it to Viewsonic's tech support and ask them why their EDID doesn't contain the native resolution for the monitor. Then get your money back. Either that or use SRX to configure the missing timing that should have been there in the first place.

How to detect if the display pdf in browser is checked for Adobe Acrobat 9

How to programatically detect if the "Display PDF in browser" option is checked/unchecked in the Adobe Acrobat 9 Pro preferences? In earlier version it was possible to determine with navigator.plugins. Please help.

Please update to the latest version of Adobe Reader i.e. 10.1.2 and enable the double sided printing as in the below figure:
Hope this helps.
Ankit

Use external display to present iphone screen for training

I have to teach newbies in my company how to use both the iPhone 4 and the iPad.
I was hoping, that there was a way to display the iPhone screen (exactly like we all see in the keynotes) so I can navigate around and they can see what's happening on an external display - instead of gathering over my shoulder.
There just has to be something - I see all the iphone costumes people use and I can't imagine there isn't a way for me to utilize it for training...
Thanks...

The only way I could think to do that would be to take screenshots of the iPhone showing the things you want to teach them, and then you could buy the iPad VGA Adapter, which works with photo slideshows and movies. You might be better off taking screenshots on the iPhone and iPad and putting together a Powerpoint to demonstrate.
I guess in the Keynotes, Apple has their own custom setup that allows them to show a live feed of the iPhone screen. I hope this is helpful, sorry if it's not exactly what you were looking for.
http://store.apple.com/us/product/MC552ZM/A
Best of luck.

HT5219 why is my mac not detecting my external display?

So ive plugged my new Acer s240hl to my mac, but the screen is saying no signal and the mac is doing nothing when I click on 'detect displays'

Hello mr13en
If you are having issues with the external monitor, follow the troubleshooting steps in the article below.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Thanks for using Apple Support Communities.
Regards,
-Norm G.

Broken iMac display - nothing visible - How to set up external display?

I have a 17" Core Duo 1.83 with a cracked screen. It boots but I can't see anything thru the cracks. I can access the system in Firewire Target Disk mode, which I used to wipe the HD and reinstall Leopard.
Is there any way to boot the iMac in Display Mirroring mode, so that I can set it up to use an external display? I have a 22" Dell connected via DVI and would like to use that.
I guess the ideal would be a keyboard shortcut to use at startup. I've seen on other boards that there is such a shortcut for the Macbook: Command + F4. But it doesn't work with the iMac.
I also have the Remote Control if that could be any help.
Would voice commands be an option? If so, how would I activate and use them, given that I can't see anything on the screen? I don't remember ever activating them, so I don't know if they'd be on at the moment.
My idea is to turn the iMac around with the broken screen facing the wall, then use it with the Dell monitor. Still lots of life left in the iMac with 2GB RAM, works very well with Leopard, still quite fast.
Any help would be GREATLY appreciated. Thanks.

Okay, looking good for now!
I found a thread on Mac Forums. Link: http://www.mac-forums.com/forums/apple-desktops/184101-help-broken-imac-external -screen.html
Guy explains how he solved problem of iMac with broken screen, connected to external monitor; you need a second Mac to do this.
I quote:
-- What u need to do is drag the menu bar from the iMac with broken screen in Sys Prefs/Displays to the Ext Display - which of course is not possible. So if you were to connect the damaged iMac by firewire to another Mac with an External display - start the damaged iMac in Target mode by holding T key after powering on. Then start the Mac with Ext Display and hold Option Key and select the damaged Mac to boot off - once that is going go into Sys Prefs/Displays and drag the menu Bar onto the External Display to make it the Primary one. Then shut it all down and connect the Ext Display to the damaged iMac and with luck you will be GO. --
I cloned my Macbook 10.5.8 system to the iMac HD and made it bootable. Seemed to be working fine. I then shut down both Macs. I connected an external display to Macbook. The Macbook and iMac were still connected via Firewire. I booted the iMac and pressed T, so it booted in TDM. After about 30 seconds I booted the Macbook and pressed Alt: the Macbook's and iMac's disks were available as boot disks. I chose the iMac's disk and waited.... Seemed a long time. But finally the external monitor came to life and I had the whole thing working, more or less.
The setup was in Extended Desktop mode, with the extended desktop on my external monitor. Luckily, a bit of the top of the iMac's screen was semi-visible, and I was able to open Display Prefs. I selected Mirrored Displays at first and then was able to work on the external display (and not thru the cracks). From here, I unchecked Mirroring and selected the external display as the main one. This worked just fine. I have a 23" full HD monitor and it looked great.
I then shut down both computers, disconnected Firewire, disconnected the monitor from the Macbook and connected it to the iMac. Then I rebooted the iMac. It booted up a lot quicker, but on startup it went back to Extended Desktop, with the iMac's display as the Main one. Again, I was able to open Monitor prefs, then clicked on Gather Windows, which put the pref window on the external monitor desktop too. Again, from there, I could make the external monitor the Main one.
Question: is there any way to make the iMac boot to where the external monitor is the Main desktop all the time and by default?
If not, maybe the worst case scenario is that I have to set display prefs to Mirrored before shutting down. Then after startup I could just make the external one the main display again.
Many thanks David.
P.S. forgot to say that when I set the external monitor as the Main one in display prefs, it all worked okay, except that when I opened System Preferences, the window opened on the iMac's screen, not the external one.
Is there a setting to make all windows, in all apps, open on the Main display?
Message was edited by: moonshot61

Yoga Tablet 8 - how to conenct an external display

Hi, I was wondering if and how I can connect an external display / monitor to my new Yoga tablet 8. I'd appreciate any hint. sergio

I have one working with Displalink. http://www.displaylink.com Wade

Photoshop 2014 crashing unless external display is present

Hello -
Running Photoshop CC 2014 on a 2013 Macbook Pro Retina Display. 16 gb ram, OS X 10.9.5 with all software updates installed as of Nov 1 2014. Recently, I've discovered that Photoshop crashes on startup if my Macbook Pro is not connected to an external display. *any* external display connected remedies the problem if it's set at the primary display, and Photoshop starts up just fine. Photoshop is the only CC 2014 app giving me this issue. Photoshop CC doesn't - it launches fine without an external display connected.
I have tried a complete uninstall of Photoshop CC 2014 and reinstall, even used Adobe's clean uninstall tool. Have tried removing Photoshop preferences. Have disabled 3rd party plugins. Have started in "safe mode." Have turned off Extensis Suitcase's auto-activation plugin. Have tried without Suitcase open at all. Nothing has remedied the problem except for having ANY external display connected and designated as the primary display.
Will post my error log - wondered if anyone else has experienced this?

Error report from when this happens is below. Hoping something stands out to someone here for a remedy?
Process:         Adobe Photoshop CC 2014 [536]
Path:            /Applications/Adobe Photoshop CC 2014/Adobe Photoshop CC 2014.app/Contents/MacOS/Adobe Photoshop CC 2014
Identifier:      com.adobe.Photoshop
Version:         15.2.1 (15.2.1.257)
Code Type:       X86-64 (Native)
Parent Process: launchd [153]
Responsible:     Adobe Photoshop CC 2014 [536]
User ID:         502
Date/Time:       2014-11-01 22:12:06.764 -0500
OS Version:      Mac OS X 10.9.5 (13F34)
Report Version: 11
Anonymous UUID: E5B6AC5D-74CE-231A-3696-6D8742E43C11
Crashed Thread: 0 Main Thread Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000050
VM Regions Near 0x50:
-->
    __TEXT                 000000010c67e000-0000000110f59000 [ 72.9M] r-x/rwx SM=COW /Applications/Adobe Photoshop CC 2014/Adobe Photoshop CC 2014.app/Contents/MacOS/Adobe Photoshop CC 2014
Thread 0 Crashed:: Main Thread Dispatch queue: com.apple.main-thread
0   com.extensis.AutoActivationPlugin.PS15 0x00000001bccf5bb8 CTFontDescriptorCopyAttributeOverride(__CTFontDescriptor const*, __CFString const*) + 44
1   com.apple.CoreText             0x00007fff923e031c TFont::InitMatrix(CGAffineTransform const*, __CTFontDescriptor const*) + 112
2   com.apple.CoreText             0x00007fff923dff80 TFont::TFont(__CTFontDescriptor const*, double, CGAffineTransform const*, __CTFontDescriptor const*) + 70
3   com.apple.CoreText             0x00007fff923dce8e CTFontCreateWithFontDescriptor + 114
4   com.apple.AppKit               0x00007fff924ea6ed -[__NSSharedFontInstanceInfo _platformFont] + 573
5   com.apple.AppKit               0x00007fff924ea195 -[__NSSharedFontInstanceInfo _textTransform] + 33
6   com.apple.AppKit               0x00007fff924ea163 -[__NSSharedFontInstanceInfo _matrix] + 22
7   com.apple.AppKit               0x00007fff924ea0b9 -[NSFont initWithInstanceInfo:renderingMode:] + 105
8   com.apple.AppKit               0x00007fff924e9dea -[__NSSharedFontInstanceInfo fontInstanceForRenderingMode:] + 383
9   com.apple.AppKit               0x00007fff924e9ae9 -[__NSFontTypefaceInfo fontInstanceForFontDescriptor:size:affineTransform:renderingMode:] + 671
10 com.apple.AppKit               0x00007fff9251a346 -[NSFont initWithCoder:] + 1731
11 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
12 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
13 com.apple.AppKit               0x00007fff92541489 -[NSButtonCell initWithCoder:] + 224
14 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
15 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
16 com.apple.AppKit               0x00007fff92516e26 -[NSControl initWithCoder:] + 265
17 com.apple.AppKit               0x00007fff92539ca2 -[NSButton initWithCoder:] + 44
18 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
19 com.apple.Foundation           0x00007fff950e262f -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1774
20 com.apple.Foundation           0x00007fff950e282b -[NSArray(NSArray) initWithCoder:] + 202
21 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
22 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
23 com.apple.AppKit               0x00007fff924d05ac -[NSView initWithCoder:] + 1949
24 com.apple.AppKit               0x00007fff924d2294 -[NSClassSwapper initWithCoder:] + 528
25 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
26 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
27 com.apple.AppKit               0x00007fff924d1cb8 -[NSResponder initWithCoder:] + 63
28 com.apple.AppKit               0x00007fff924cfe6f -[NSView initWithCoder:] + 96
29 com.apple.AppKit               0x00007fff92516d50 -[NSControl initWithCoder:] + 51
30 com.apple.AppKit               0x00007fff92539ca2 -[NSButton initWithCoder:] + 44
31 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
32 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
33 com.apple.AppKit               0x00007fff924a9ccd -[NSNibConnector initWithCoder:] + 106
34 com.apple.AppKit               0x00007fff924a9b4e -[NSNibOutletConnector initWithCoder:] + 73
35 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
36 com.apple.Foundation           0x00007fff950e262f -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1774
37 com.apple.Foundation           0x00007fff950e282b -[NSArray(NSArray) initWithCoder:] + 202
38 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
39 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
40 com.apple.AppKit               0x00007fff924a8782 -[NSIBObjectData initWithCoder:] + 205
41 com.apple.Foundation           0x00007fff950e1522 _decodeObjectBinary + 2534
42 com.apple.Foundation           0x00007fff950e09dd _decodeObject + 288
43 com.apple.AppKit               0x00007fff924a856f loadNib + 232
44 com.apple.AppKit               0x00007fff924a7b6c +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 288
45 com.apple.AppKit               0x00007fff9273c4d2 +[NSBundle(NSNibLoading) loadNibFile:externalNameTable:withZone:] + 140
46 com.apple.AppKit               0x00007fff92813e3c _NXLoadNib + 193
47 com.apple.AppKit               0x00007fff9281384f -[NSAlert init] + 95
48 com.adobe.Photoshop           0x000000010c71472c 0x10c67e000 + 616236
49 com.adobe.Photoshop           0x000000010c7145b8 0x10c67e000 + 615864
50 com.adobe.Photoshop           0x000000010c77da13 0x10c67e000 + 1047059
51 com.adobe.Photoshop           0x000000010c77e68a 0x10c67e000 + 1050250
52 com.adobe.Photoshop           0x000000010c71b088 0x10c67e000 + 643208
53 com.adobe.Photoshop           0x000000010c9bd67b 0x10c67e000 + 3405435
54 com.adobe.Photoshop           0x000000010c9bd829 0x10c67e000 + 3405865
55 com.adobe.Photoshop           0x000000010c680d34 0x10c67e000 + 11572
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib         0x00007fff8d589662 kevent64 + 10
1   libdispatch.dylib             0x00007fff8b6af421 _dispatch_mgr_invoke + 239
2   libdispatch.dylib             0x00007fff8b6af136 _dispatch_mgr_thread + 52
Thread 2:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 3:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 4:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 5:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 6:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 7:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 8:
0   libsystem_kernel.dylib         0x00007fff8d588e6a __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff8daf9f08 _pthread_wqthread + 330
2   libsystem_pthread.dylib       0x00007fff8dafcfb9 start_wqthread + 13
Thread 9:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 10:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 11:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 12:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 13:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 14:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 15:
0   libsystem_kernel.dylib         0x00007fff8d584a56 semaphore_wait_trap + 10
1   libtbb.dylib                   0x0000000111c60550 tbb::internal::rml::private_worker::thread_routine(void*) + 480
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 16:: com.apple.CFSocket.private
0   libsystem_kernel.dylib         0x00007fff8d5889aa __select + 10
1   com.apple.CoreFoundation       0x00007fff8f408a03 __CFSocketManager + 867
2   libsystem_pthread.dylib       0x00007fff8daf8899 _pthread_body + 138
3   libsystem_pthread.dylib       0x00007fff8daf872a _pthread_start + 137
4   libsystem_pthread.dylib       0x00007fff8dafcfc9 thread_start + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x00007fff7c688680 rcx: 0x0000000000010f80 rdx: 0x0000610000086180
rdi: 0x0000610000086180 rsi: 0x00007fff7c688680 rbp: 0x00007fff5357e2e0 rsp: 0x00007fff5357e2c0
   r8: 0x00007fff9249331e   r9: 0x0000000000000032 r10: 0x00007fff92493306 r11: 0x00007fff9249331e
r12: 0x0000000000000000 r13: 0x0000610000086180 r14: 0x0000610000086180 r15: 0x0000000000000000
rip: 0x00000001bccf5bb8 rfl: 0x0000000000010202 cr2: 0x0000000000000050
Logical CPU:     0
Error Code:      0x00000004
Trap Number:     14

How to turn off external display?

Hi,
Does anyone know if there is a way to turn off a second display without unplugging the hdmi cable. If it can be done programmatically, then that would be great.
There is a bug where if you shut down and restart, then mission control adds the second display to the main display.
Thanks,
kel

hey i might be able to help you out
a few things you should know i have my phone set to turn off my backlight after 20 seconds... also i do not use the bedside mode it just dims the screen...
you can change this in your options under screen/keyboard
now then to turn off your external display while your charging you phone go to your home screen and select you clock
then push your menu button and select options
the under the the CLOCK tap it should say: WHEN CHARGING... set that option to DO NOTHING...
and there you go i hope this helps...
~HaZe42o~

How to detect if external display is present

Similar Messages

Maybe you are looking for