Scaling to external display

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• 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

• External display on HDMI overheating my Mac and drains the battery badly

  Hey guys.

  I am using a MBP retina 2012 15 inches with an external monitor, a generic LCD 1080 p via HDMI without problems. And recently updated for Sierra.

  The question starts immediately when I plug it into the screen. The Macbook seems to overheat and run fans above 4000 rpm, which is very audible and boring. CPU and GPU temperatures go above 70 degrees C (normally they make 50 +). The battery holds for only 1.5 hours, generally works well for 4-5 hours.
  I tried killing all apps, followed a bad process in activity monitor, changing default resolution - nothing helps so far. The CPU is barely used by 10%, the memory pressure is fine.
  It's just that time when I plug the screen - Mac starts bad feeling. Never, the problem occurred on El Capitan. Maybe it's a GPU problem, but certainly caused by the OS.
  All the world had the same problem?

  Try resetting the NVRAM (hold down the command-option-P-R on startup).

  Also, try to restart in Mode without failure, then normally again.

  Finally, try logging into your account, sign in to a user account (or the guest account) and connect the external display. Same problem? If it works fine for a new account then it's something in your own account which is the cause - perhaps an element of connection or some other system changes induced by the operating system previous and who does not play nice with Sierra.

• 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.

• Question external display

  Hello

  I recently bought a henge dock and the external display for my MacBook Pro 15 "."

  The henge dock has a bolt of lightning from the macbook. My monitor has an extra display port and HDMI in, this looks a bit similar to HDMI. I'm looking for a cable to use thunderbolt out in the display on the external monitor port. I can find a few inexpensive options online, but I would go for quality rather than price and wonder what is the best solution in this case to HDMI.

  Thank you

  This cable should do the trick: http://www.apple.com/shop/product/HHLY2ZM/B/belkin-4k-mini-displayport-to-hdmi-c have-2-m-65-ft

  (In case you're wondering: the mini display plug in the thunderbolt port.)

• My iMac screen went black, I use external display?

  MY iMac screen went out or black.

  Always a good hard drive.

  So can I use an external display to log off

  and wipe the hard drive for recycling.

  Thank you

  Yes. Here is the information on your model:

  Connection of the screen	1 mini DisplayPort
  Display modes	Double view extended and copy video
  External resolution	Up to 2560 x 1600 pixels

• rMbp mid-2014, external display with the quality of the retina

  Hello!

  I buy a Dell 24 "external display to connect to my rMBP with QHD (2 560 x 1 440) resolution.

  http://www1.euro.Dell.com/content/products/ProductDetails.aspx/Dell-u2515h-monit or? c = en & l = en & s = dhs & cs = frdhs1

  I have connected the screen to my mbp with the mini display / port cable supplied with the display screen. It works well, but I don't have quality of retina at all (the images seems good but the text is terrible)

  The text have a bad record as a retina screen, and it makes a big difference when I spend my retina display to the external display which is not comfortable at all.

  I though that this kind of screen was OK to view the retina... but I was wrong. I try to connect with minidisplay / display and HDMI! HDMI made was worse than minidisplay. The res in the system report show was good 2 560 x 1 440. I even try the hack to force with the patch, but always bad RGB render text...

  More important, I want to, it's having the same record as retina on the text and images. What external display can be good for this?

  My budget is 450-€500

  Thank you

  The size in pixels of the screen is not mean much: a small display to 2560 x 1440 pixels seems much sharper than a widescreen 2560 x 1440 pixels.

  Your retina Macbook has something like 220 dpi (DPI in English), the Dell screen only 117. If you want the same sharpness, you will need to choose a display with 220 dpi. But then, everything on the screen will look much smaller. Here is a tool that allows you to get the idea: http://dpi.lv/

• Can I use my MacBook Air as an external display for a MacMini via ports thunderbolt?

  Can I use my MacBook Air as an external display for a MacMini via ports thunderbolt?

  Advice appreciated!

  No, you can't.

• Switching the external display to MBP screen retina, poor quality, need to restart FF19.0.2

  Here is the chronology of the events:

  (1) FF start on my MBP (OS 10.8.2) and the retina display working properly.

  (2) connect my MBP to a 24 "external display which has a resolution of 1920 x 1200 (defined as primary) max. FF displays well on screen.

  (3) disconnect the external display and FF is now pixel on retina MBP. Updating of system preferences Dispay doesn't seem to help, or I have not found the magic technique.

  (4) restart FF and everything is fine.

  The question seems so FF not to recognize the need to revisit the resolution of the retina.

  You are welcome

• 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

• Qosmio X 870-116: use of Intel / nVidia GPU internal / external display

  Hello

  I have a Qosmio X 870-116 which have 2 video cards, an Intel onboard and a more powerful Nvidia.
  My problem, I did not how to pass my screen on the Intel card and I see my Nvidia for the display external.

  Someone has an idea to pass on to my first display nvidia card?

  Thank you

  Hello

  Something like this isn't possible.
  You cannot use two cards simultaneously for internal and external display.

  First of all, you can switch between the external and internal view using the Fn + F4 (or just F4) function key

  Secondly the nVidia Optimus technology optimize the performance of the laptop perfectly without a GPU nVidia and Intel graphics card.
  Switching is automatic and requires no reboot of s for laptop.

• 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.

• Satellite Pro A110 PSAB1C: can't choose certain resolution external display

  I have Pro A110 PSAB1C-GM60XE with Intel Graphics Media Accelerator (Controller graphic memory integrated Intel 945GM Chipset) running Windows 7 Enterprise.
  Graphics driver is up to date.

  We got 20 "external monitor wide screen HD.
  When it is used as external screen it allows only up to 1280 x 1024. The display is nice streched out.

  I tried the monitor of one laptop another the same graphics card (integrated memory graphics controller Intel 945GM Chipset), also Windows 7 Enterprise.
  The same version of the graphics driver. This laptop has resolution up to 1600 x 900.

  Any ideas on what needs to be done on A110 Pro to support the resolution 1600 x 900 for the external monitor?

  Note: I've tried DTD Calculator but still the same http://software.intel.com/en-us/forums/showthread.php?t=56423.

  Hello

  Available external display resolution depends on the graphics chip and the driver graphics card.
  If the graphics chip or the graphics driver doesn t card supports the preferred external resolution, you will not be able to choose.

  It seems that the graphics chip will support this resolution.
  In such cases, it s a driver problem.

  Therefore, it would be advisable to download and install the driver from the Intel page.
  I had the similar problem in the past. The driver of Toshiba page didn t supports my favorite external resolution. I got the driver from Intel page and was able to chose him.

• Satellite M50-130: no display after the passage of the external display in main monitor

  I have a very strange problem.
  My brother was on his user space as soon as possible and I managed to get the secondary monitor for main monitor and disable the screen of the laptop back, however, when it comes to me, it won't happen...

  Well, any help would be appreiciated.

  Hello

  Could you please be clearer? Is it possible to see something on the external monitor?
  Do you see something? What happens if you use the function FN + F5 device display?

  I put t know how you managed to set the external display as main screen because on my laptop, this option is grayed out.
  However, you should see the laptop if you will start Notepad in safe mode. Please check!