"There no external display connected.

Similar Questions

• Two external displays connected to my dock and my ThinkPad T450

  I have two external displays connected to my dock and my ThinkPad T450.
  Everything works fine, when suddenly the monitor LEN LT2223pwC (using DP cable) goes into energy saving mode during use and there is not up to come back/wake, only to turn it off and back on
  This Setup worked very well with my office. For some reason any the monitor does not receive the signal from the laptop / docking station.

  I got a new docking station and solved the problem. Thank you

• No sound on external display connected by HDMI win7 premium 64-bit running Notepad

  Previously on vista I had no problem. its available on external monitor connected HDMI
  Cannot find any control in win 7 to switch on the sound computer monitor HDMI

  Hello rbh111,

  Thank you for visiting the Microsoft answers Site.

  To better help, what is the brand and model of your PC?

  Also, try clicking on Show disconnected devices and see the disabled devices under the noise>reading tab and make sure that output HDMI device option.

  If the HDMI option is not listed, you can check that the last audio device driver Windows 7 and Windows 7 video card driver provided by the manufacturer of the PC are installed and then check the issue.

  Please let us know if the steps above help you to solve the problem for you.

  Thank you

  Mary
  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• System hangs on the external display connection

  I just bought a MacBook Pro 13 "mid 2012 version because I travel a lot." I do a lot of coding on my main PC. I didn't mind having a smaller screen and the retina no since I had to plug my monitor 27 "HD for the majority of my work. This is the problem...

  Two things happen when I try to connect it via Apple's Thunderbolt at the VGA connector. Or the other

  1. the external screen but the MBP 2012 (1200 x 800) native resolution and I can't change it at all

  or

  2. all of the gray system out and crashes and the second monitor turns off say there is no entry. Then I pressed the power button to turn off completely it.

  Nothing wrong with the display or the adapter I tested them both on another laptop that my wife and my main development office (two PCs). I guess that something is wrong with the MacBook or the underlying software. I'm running El Capitan and the MBP is maxed out in RAM and a 500 GB SSD. I tried a lot of things I've seen online already, but none of them worked. Is this what can I do to get the 2nd screen to work on its 1920 x 1080 resolution?

  Have you tried the PRAM reset?

  How to reset the NVRAM on your Mac - Apple Support

• MacBook pro screen flashing external display connection

  Whenever I connect a display remotely on DVI (tried both Apple DVI-> Adapter Mini DisplayPort customized DVI-> HDMI adapter), my Macbook pro display blinks for a long time, like 1-2 minutes before you succeed. This does not happen with VGA (I tried Apple VGA-> Mini DisplayPort adapter). He is shown here:

  https://www.YouTube.com/watch?v=dLmI82DDvXw

  It's annoying as *. For example: whenever I visit the coffee machine or the bathroom, I have to wait 1-2 minutes until I can get back to work, because the screen was turned off until I can come back. And don't suggest me to extend the period of closure, which is not a viable solution. It happens every morning so when I get to work and turn on the computer.

  Any help would be greatly appreciated!

  See you soon

  Hi ColonelKermit,

  I understand that you have a problem with your screen when attaching it to an external monitor. You can try to fix it by resetting your NVRAM memory on your computer, which is explained in the following article:

  How to reset the NVRAM on your Mac - Apple Support

  https://support.Apple.com/en-us/HT204063

  You can also start your computer Safe Mode, which can help to influence the situation:

  Try safe mode if your Mac does not end commissioning - Apple Support

  https://support.Apple.com/en-us/HT201262

  Thanks for being a part of the communities of Apple Support!

• W520 gets stuck on Thinkpad with a hard drive external display connected

  Hello world

  I just changed from an external hard drive of 500 GB to 3 to one, but if I leave that new connected for starting my computer the computer crashes to the thinkpad logo and launch startup.

  The boot order is set to boot from the internal hard drive before the media CD or USB, so I don't know why it is the way.

  I have no problem with my original external hard drive connected.

  This isn't a huge problem, just a downside I want to turn on my computer, wait 30 seconds, going ' Oh shoot, on the right, "have to disconnect the drive, and then restart.

  Thanks for any help!

  gtlane wrote:

  Hello world

  I just changed from an external hard drive of 500 GB to 3 to one, but if I leave that new connected for starting my computer the computer crashes to the thinkpad logo and launch startup.

  The boot order is set to boot from the internal hard drive before the media CD or USB, so I don't know why it is the way.

  I have no problem with my original external hard drive connected.

  This isn't a huge problem, just a downside I want to turn on my computer, wait 30 seconds, going ' Oh shoot, on the right, "have to disconnect the drive, and then restart.

  Thanks for any help!

  What level of BIOS are you running on the W520 and what external HARD drive brand? BIOS 1.38 was supposed to fix the POST with the 3 TB drive plugged into the USB 3.0 port. Please report back.

• Satellite Pro P100: external display connected to DynaDock uses 800 x 600

  I have a P100 SatPro attached to a monitor external 19 "via a Dynadock.

  By default, whenever I start the laptop the screen resolution 800 x 600.
  I have to manually reset to my desired resolution (1280 x 1024, 32-bit colors).
  If I reboot at any time the resolution then default back to 800 x 600.

  It's driving me crazy! Why won't save the settings? I tried to reinstall the software with no joy.
  Operating system is Windows XP SP2 and I'm a full administrator.

  Any help or ideas appreciated.

  see you soon
  Ian

  Hello

  I m not 100% sure if this might help you, but I noticed a similar problem on the Tecra M4 anchored to the multiple dock Tablet.
  The update of the BIOS helped solve this problem.

  In addition, an update of the graphics card driver would be desirable.

  Good luck

• MacBook - problems to connect the external display w

  I do a lot of presentations (Keynote) to Mac external displays at events.

  The new MacBook (12 ") is quite often problems, so I have to carry a MacBookAir as back-up in case where.

  Problems can be no image at all, or two images (like 70% Keynote + 30% of office) and with spikes.

  It doesn't matter if I use HDMI or VGA. And Yes, I know how to set the resolution in the workplace sometimes that the problem is solved by adjusting the resolution manually, but then the Macbook can jump to the resolution which does not by itself during the slide show...

  I think that the problem only occurs when I have to go through a device such as a split, or when there is a lot of tech back stage.

  Anyone having problems of this kind with the MacBook?

  Any ideas on what is wrong and how to fix?

  Hello stefanfromingaro,

  The article link below a certain number of troubleshooting steps in details that can help stabilize the output video to your Mac when connected to external displays.

  Get help with graphical problems on external displays connected to your Mac.
  https://support.Apple.com/en-us/HT201177

  All my best.

• Impossible to connect an external display

  Hello

  I have a MacBook pro 13 "with the latest software and updates to the OS. I tried unsuccessfully to connect my laptop to an external display, a Dell P2414H.

  Unfortunately, this screen has a hdmi connector. I used the VGA cable with a VGA adapter / HDMI to connect to my Mac. I chose the VGA output on the screen, but the MacBook has not detected the screen. I can connect the external display with the laptop of a colleague who is on the 8.1 Windows / Ubuntu LTS 14.04 (dual boot). Thus, the HDMI, VGA cable adapter and the screen are ok because they work on other computers.

  I also tried to plug in my MacBook at home with my external screen Asus (hdmi connection) and my Sony TV (hdmi connection). Everything worked well.

  How can I solve the problem of connection with external display Dell?

  Thank you

  Hello Swissteam,

  Thank you for using communities of Apple Support.

  I see that you are not able to connect your Dell screen to your MacBook Pro. Here are a few articles to take a look at the problem.

  Get help with graphical problems on external displays connected to your Mac.

  Use 4 K and Ultra HD TVs with your Mac screens

  If they do not resolve the problem for you, please let us know more details on the specific symptoms you see.

  Concerning

• kernel_task runaway (from 300 to 600%) CPU with 2 external displays

  I have a MacBook Pro (retina, mid-2012), and for a year and a half, I've had episodes fighter during the kernel_task suddenly begin to consume all processor CPU (from 300 to 600%), is the response of the system so slow it is impossible to use.  I experience these episodes throughout the front 1-2 years that the machine went from Yosemite El Capitan and now Sierra.

  Normally, I use my MacBook with two external displays, both at work and at home.  At work, I have two external screens of Lenovo, and at home, I have two screens Apple (Apple Cinema Display 27-inch and 27-inch Apple Thunderbolt Display). I discovered that this kernel_task high CPU usage can only be stopped by disconnecting one of the external screens.  After unplugging an external display, the kernel_task subsides immediately to normal (< 5%).  After a few minutes, I can reconnect the 2nd external screen and proceed normally (sometimes for days, sometimes for hours, sometimes for a few minutes) until the kernel_task pulls up to 300-600% again.  The use of the high CPU kernel_task never happens unless I have two external displays connected.

  Note that since I upgraded to MacOS Sierra fugue kernel_task CPU frequency has increased considerably: of 1 kernel_task runaway every several days to a runaway almost every 10 minutes or so.   I don't have a reason this frequency has increased, but the runaway condition seems to have worsened by the fact that the photoanalysisd daemon is running like crazy on my grand (72 000) library of Photos.

  Also note that I started in recovery mode and have re-installed MacOS Sierra, and it has no effect on the runaway kernel_task.

  Any ideas on how to fix this resumption of kernel_task of all my CPU?

  I have attached my EtreCheck system report below.  This report was captured with two attached external displays.  At halfway while generating a report, the kicks and started kernel_task hogging CPU again.

  EtreCheck version: 3.0.5 (309)

  Report generated 2016-09-25 14:24:02

  Download EtreCheck from https://etrecheck.com

  Time 07:59

  Performance: Below average

  Click the [Support] links to help with non-Apple products.

  Click [details] for more information on this line.

  Problem: Computer is too slow

  Description:

  Sometimes, while working with my MacBook connected to two external displays, the kernel_task pulls up to 600 to 800% CPU and stays there until I unplug at least one of the external screens.  After disconnecting, the kernal_task subsides immediately to normal (< 5%).  After a few minutes, I can plug the 2nd external screen and proceed normally (sometimes for days, sometimes for hours, sometimes for a few minutes) until the kernel_task pulls up to 600 to 800% again.  The use of the high CPU kernel_task never happens unless I have two external displays connected.

  Hardware Information: ⓘ

  MacBook Pro (retina, mid-2012)

  [Data sheet] - [User Guide] - [warranty & Service]

  MacBook Pro - model: MacBookPro10, 1

  1 2.6 GHz Intel Core i7 CPU: 4 strands

  16 GB RAM not extensible

  BANK 0/DIMM0

  OK 8 GB DDR3 1600 MHz

  BANK 1/DIMM0

  OK 8 GB DDR3 1600 MHz

  Bluetooth: Good - transfer/Airdrop2 taken in charge

  Wireless: en0: 802.11 a/b/g/n

  Battery: Health = Normal - Cycle count = 242

  Video information: ⓘ

  Graphics Intel HD 4000

  NVIDIA GeForce GT 650M - VRAM: 1024 MB

  Color LCD 3840 x 2400

  LED Cinema Display 2560 x 1440

  Thunderbolt Display 2560 x 1440

  Software: ⓘ

  macOS Sierra 10.12 (A 16, 323) - since the start time: about an hour

  Disc information: ⓘ

  APPLE SSD SM512E Disk0: (500,28 GB) (Solid State - TRIM: Yes)

  EFI (disk0s1) < not mounted >: 210 MB

  Recovery HD (disk0s3) < not mounted > [recovery]: 650 MB

  Boromir (disk1) /: 499,05 (Go 140,24 free)

  Storage of carrots: disk0s2 499.42 GB Online

  USB information: ⓘ

  Apple Inc. FaceTime HD camera (built-in)

  Apple Inc. Apple keyboard / Trackpad

  Apple Inc. BRCM20702 hub.

  Apple Inc. Bluetooth USB host controller.

  Apple Inc. Apple LED Cinema Display

  ISight Apple Display Inc.

  Apple Inc. Audio display

  Apple Inc. FaceTime HD camera (display)

  Apple Inc. Apple Thunderbolt Display

  Apple Inc. Audio display

  Lightning information: ⓘ

  Apple Inc. Thunderbolt_bus.

  Thunderbolt Inc. Apple display.

  Configuration files: ⓘ

  / etc/sudoers, 2299 but file size expected 1563

  Guardian: ⓘ

  Mac App Store and identified developers

  Kernel extensions: ⓘ

  / Applications/Beats Updater.app

  com.beatsbydre.BeatsDFUSupport [no charge] (2.1.0 - SDK 10.10 - 2015-10-29) [Support]

  /Applications/proxifier.app

  [no charge] com.initex.proxifier.macosx.kext (2.15.2b1 - SDK 10.7 - 2015-09-10) [Support]

  / System/Library/Extensions

  [no charge] com.makemkv.kext.daspi (1.5-2016-09-25) [Support]

  Startup items: ⓘ

  TiVoDesktop: Path: / Library/StartupItems/TiVoDesktop

  Startup items are obsolete in OS X Yosemite

  Launch system officers: ⓘ

  [no charge] 7 tasks Apple

  [loading] Apple 156 jobs

  [running] Apple 108 jobs

  Launch system demons: ⓘ

  [loaded] com.apple.jetsamproperties.Mac.plist (2016-08-25) [Support]

  [no charge] 41 tasks of Apple

  [loading] 153 jobs Apple

  tasks of Apple 109 [performance]

  Launch officers: ⓘ

  [cannot] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist (2016-07-11) [Support]

  [loading] com.cisco.anyconnect.gui.plist (2014-06-10)

  com.DisplayLink.UserAgent.plist [no] (2012-08-14) [Support]

  [loading] com.google.keystone.agent.plist (2016-07-11) [Support]

  [loading] com.oracle.java.Java - Updater.plist (2013-01-04) [Support]

  Launch demons: ⓘ

  [loading] com.adobe.ARMDC.Communicator.plist (2016-07-11) [Support]

  [loading] com.adobe.ARMDC.SMJobBlessHelper.plist (2016-07-11) [Support]

  [loading] com.adobe.fpsaud.plist (2016-08-29) [Support]

  com.backblaze.bzserv.plist [running] (2016-07-11) [Support]

  com.Cisco.anyconnect.vpnagentd.plist [running] (2014-06-10) [Support]

  com.DisplayLink.usbnivolistener.plist [no] (2012-08-14) [Support]

  [loading] com.google.keystone.daemon.plist (2016-09-09) [Support]

  [loading] com.oracle.java.Helper - Tool.plist (2013-01-04) [Support]

  [loading] com.sharpcast.xfsmond.plist (2013-11-30) [Support]

  User launch officers: ⓘ

  com.backblaze.bzbmenu.plist [running] (2016-09-25) [Support]

  com.vladalexa.MagicPrefs.plist [running] (2016-09-25) [Support]

  Items in user login: ⓘ

  iTunesHelper Application (/ Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

  HWMonitor Application (/ Applications/HWMonitor.app)

  Hidden CPULed Application (/ Applications/CPULed.app)

  Application of hidden activity monitor (/ Applications/Utilities/Activity Monitor.app)

  Dropbox application (/ Applications/Dropbox.app)

  Hidden SizzlingKeys Application (/ Applications/SizzlingKeys.app)

  Beats Updater Application (/ Applications/bat Updater.app)

  Hidden NET Monitor Application (/ Applications/Net Monitor.app)

  Plug-ins Internet: ⓘ

  FlashPlayer - 10.6: 23.0.0.162 - SDK 10.9 (2016-09-15) [Support]

  QuickTime Plugin: 7.7.3 (2016-09-13)

  AdobePDFViewerNPAPI: 15.017.20053 - SDK 10.11 (2016-08-03) [Support]

  AdobePDFViewer: 15.017.20053 - SDK 10.11 (2016-08-03) [Support]

  Flash Player: 23.0.0.162 - SDK 10.9 (2016-09-15) [Support]

  Silverlight: 5.1.20913.0 - SDK 10.6 (2014-03-07) [Support]

  JavaAppletPlugin: Java 8 update 101 build 13 (2016-08-18) check the version of

  User Plug-ins internet: ⓘ

  WebEx64: SDK-1.0-10.10 (2016-01-23) [Support]

  Safari extensions: ⓘ

  Ghostery - GHOSTERY, Inc. - https://www.ghostery.com/ (2016-03-15)

  3rd party preference panes: ⓘ

  Backblaze backup (2016-07-11) [Support]

  Flash Player (2016-08-29) [Support]

  FUSE for OS X (OSXFUSE) (2013-11-30) [Support]

  Java (2016-08-18) [Support]

  MagicPrefs (2016-01-20) [Support]

  MenuMeters (2014-10-22) [Support]

  TiVo Desktop (2009-11-23) [Support]

  Time Machine: ⓘ

  Skip system files: No.

  Mobile backups: OFF

  Automatic backup: YES

  Volumes to back up:

  Boromir: Disc size: 499,05 GB disc used: 358,81 GB

  Destinations:

  Frodo Time Machine [Local]

  Total size: 999,86 GB

  Total number of backups: 40

  An older backup: 09/09/16, 02:09

  Last backup: 25/09/16, 11:49

  Backup disk size: too small

  Backup size GB 999,86 < (disc 358,81 GB X 3)

  Top of page process CPU: ⓘ

  345% kernel_task

  56% Information System

  44% cloudphotosd

  42% iTunesCacheExtension

  30% activity monitor

  Top of page process of memory: ⓘ

  1.44 GB kernel_task

  1.18 GB com.apple.WebKit.WebContent (6)

  786 MB mds_stores

  590 MB bztransmit

  Mdworker (18) 492 MB

  Virtual memory information: ⓘ

  256 MB of free RAM

  4 pm used GB RAM (5.96 GB being cached)

  768 KB used Swap

  Diagnostic information: ⓘ

  25 sep, 2016, ~/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2016-09-25-134618_ 13:46:18 [redacted] .crash

  System/Library/Frameworks/WebKit.Framework/versions/A/XPCServices/com. Apple.We bKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

  25 sep, 2016, 13:19:15 /Library/Logs/DiagnosticReports/photolibraryd_2016-09-25-131915_[redacted].cpu_ resource.diag [details]

  /System/Library/PrivateFrameworks/PhotoLibraryPrivate.Framework/versions/A/Supp ort/photolibraryd

  25 sep, 2016, 13:06:44 test - passed

  September 22, 2016, 16:03:11 ~/Library/Logs/DiagnosticReports/Microsoft Word_2016-09-22-160311_ [redacted] .crash

  com.microsoft.Word - Applications / Microsoft Office 2008/Microsoft Word Word.app/Contents/MacOS/Microsoft

  Start safe mode, use this way and see if the problem is recurring

• How to calibrate an external display for macOS Sierra?

  Hi guys,.

  seems that on my Macbook Pro after the update everything is strong and displayed correctly.

  However, on the external monitor, a 24 "AOC who was as crisp and sharp as the laptop (kind of I know) the images and the text seems to be well screwed. two attached photos to see the differences between the screens - even cannot correctly read the external monitor

  any ideas on how to solve this problem? or is irreparable? I tried to calibrate the monitor, used the old calibration profiles, etc. looks like illegible

  Thanks in advance

  Hello justme12,
  Thank you for using communities of Apple Support.

  If I understand your post that the quality of the image on the external monitor is as clear and crisp as it used to be. I understand wanting to the external monitor to be as clear as possible. I recommend using the steps in this article to help resolve this problem:

  Get help with graphical problems on external displays connected to your Mac.

  Best regards.

• External display problem

  HI, I have a problem with an external display connected with VGA to my MBP retina using a useful of love at first sight.

  I used to have offices in each screen, so if I changed external '3' to the '2' in the display office desktop, Office on screen macbook used to stay in the '1' office that I was using, now if a change from one office to another (for example using gesture) screens of stand are affected, the son, I have the same number of jobs in each screen and if a want to change into a screen I can not leave the other in the office that I used.

  just to be clear, the screens are not in mirroring, they are separated, only changes in office in a screen also has an impact on another one (the contents of each office is not the same)

  Thank you for any response

  Try changing the 'screens have separate spaces' setting in the preferences system "Mission Control."

• Tecra Z50 - A - 11 c: external display do not wake

  Hello

  I've got Tecra Z50 - A - 11 c and an external display connected to the VGA port.
  I implemented the plan of power management to turn off the screen after 10 minutes.

  The monitor turns off after 10 minutes of inactivity.
  The problem is that is not wake the mouse or a key.

  I have to restart the laptop to put the image on the external monitor.
  The internal display works fine.

  It seems to me like a BIOS problem, but I have the latest version of the BIOS.
  Any ideas?

  Thank you
  Jacek

  What happens if you press the function key (Fn + F5) to change the display output? This combination activates the external monitor again?
  Have you noticed the same problem using the hibernation, or "sleep" mode?

  I m not very good if it really a laptop before issuing.
  I mean the internal display still works fine and it would be advisable to check this problem using different external monitors.

  By the way: the laptop supports Intel HD Graphics 4400. Try to install the latest Intel GPU driver:
  https://Downloadcenter.Intel.com/SearchResult.aspx?lang=eng&ProdId=3719

• Can I connect simultaneously on Toshiba laptop to 2 external displays?

  Hello

  I am interested to know that toshiba laptop currently on offer support 2 external monitors simultaneously (one normal and then as dekstop extended in windows). I'm looking to replace my old configuration of the laptop and a station connected to two external monitors with a resolution of 1280 x 1024.

  I was looking on toshiba websita to
  Portégé R700-15 q
  http://UK.computers.Toshiba-Europe.com/innovation/product/Portege-R700-15Q/1089286/toshibaShop/false/

  with Port Replicator Port PA3680U-1PRP then some other laptop port replicator who but not the case on the site I could find if any concrete model supports the dual use of the two (VGA and HDMI or VGA and DVI) port

  I was looking on the the user guide at http://www.csd.toshiba.com PA3680U-1PRP Port Replicator
  http://www.CSD.Toshiba.com/cgi-bin/TAIS/support/JSP/modelContent.jsp?CT=SB&OS=&category=&MOID=2756712& rpn = PA3680U & modelFilter = PA3680U-1PRP & SelCategorie = 2756711 & selFamily = 116319
  and in the troubelshouting part, I found this:

  Cannot display information to a
  DVD-D and RGB monitor to the
  same time

  Check that the cables connecting the monitors are firmly fixed on
  both ends. Some computer models don't support DVI and RGB output
  monitors simultaneously. See the documentation for your computer
  model.

  But even if you find on http://www.csd.toshiba.com the file pdf of detailed spec and user guides, there is no information on whether they take in charge simultant output to monitors or not and what is the maximum resolution supported for this.

  Thanks for any help

  Ian

  As far as I know it is not possible to connect two external displays. I know that you can only use a port. If you want to use two screens you probably external device as Toshiba Dynadock.

  Check it out.

• Re: Satellite A660-10W - connection external display with HDMI cuts sound on

  When I use an external display via the HDMI, it mutes the sound of the laptop.
  It's OK because the external display has a headphone/speaker output jack.

  However, when I close the external screen (which I use for movies only) and to use the laptop only, the sound is cut all the time that the HDMI cable is connected.

  I can't hear sound - by harman/kardon speakers or headphone - when the HDMI cable is disconnected (if the external display is turned on or off).

  Is there a way to allow me to have the choice and use her laptop - even when the HDMI cable is connected - in order not to keep plugging and plugging on?

  Thank you

  It is clear.
  If the HDMI cable is connected, then the digital output is defined as audio output by default and therefore you do not hear the sound of the internal speakers but on external monitor speakers.

  You need to change the sound settings.

  Go to control panel of-> sound-> reading tab and set the speakers to laptop as default.
  Then you should hear sound from the speakers for laptop!