1. Start Shutdown Not Working
2. Mac Displayport Not Working After Manual Shutdown Windows 10
3. Mac Displayport Not Working After Manual Shutdown 2017
4. Mac Displayport Not Working After Manual Shutdown On Iphone

Click Cancel or Shut Down. (If you don’t click either option, your Mac will shut down automatically after a few minutes.) Press Control+Eject (or press the power button). When a dialog box appears, click the Shut Down button. Press and hold the power button to force your Mac to shut down.

I have 2 monitors connected to a NVIDIA GeForce GTX 660:

• Left is 1920x1080 via DVI (Samsung SyncMaster 2443BW)
• Right is 2560x1440 via DisplayPort and is set to Primary (Samsung SyncMaster SA850)

I often leave my computer running overnight (working on long render job, doing backups, etc) so I only power off my monitors manually. However, if I power off the primary monitor, it is disabled completely as if it were unplugged from the graphics card (i.e. icons are moved, open apps are moved and resized to fit on the new primary monitor). If I switch from DP to a DVI cable, this does not occur. It seems to be an issue when using DisplayPort.

Is there a way to disable the monitor from being disabled completely in Windows when I power it off physically?

I have found no relevant settings in either Windows Display settings, nor the NVIDIA control panel software.

Edit #1: I'm using an Oehlbach Transdata DP 510 cable.

Edit #2: Here is a screenshot of my NVIDIA Control Panel v7.2.710.0:

Edit #3: Here are screenshots of my Monitor configuration:

Clicking on Advanced settings reveals a Generic PnP monitor running at 59 Hz? 60 Hz is the only other option available.

Here is my secondary monitor which is connected via DVI:

Edit #4: If I open the 'Screen Resolution' configuration panel and power the monitor off (via the power switch), this is what is shown:

It looks like I disconnected the monitor from the video card.

glennerooglenneroo

15 Answers

I've run into this issue as well and I've decided to write a little utility to restore the position and sizes of the windows on each of the screens. I unfortunately have an AMD card so the Nvidia solutions don't work for me.

DisplayPort acts as a PNP device, so turning off the monitor disconnects it from the computer as if it was removed and windows are moved out because Windows forgets this device, until it is turned on again and is 'discovered'.

One solution is to just let the screen go into sleep instead of turning it off.There are ways of programmatically forcing that, for example by using the monoff commandin the free Wizmo utility to turn off all monitors.

Another solution for NVIDIA cards is detailed inDisplayPort Blanking / Screen Autodetect Problemsby setting the monitor to use EDID information from a file instead of from the monitor,so auto-detect is not required.

This is done in NVIDIA Control Panel -> Workstation -> View system topology ->EDID source (for the monitor) -> Monitor... -> Export EDID.

Repeat this for each monitor. The topology should list the display as either EDID 'forced' or 'file'. See the linked article for more detail.

harrymcharrymc

Disable the 'DisplayData Channel Command Interface' (DDC/CI) in your monitor settings.
As a result Windows will not recognize if you turn off your monitor and your desktop icons stay as they should. I successfully tested this on a Dell monitor!

Wikipedia descripes DDC/CI as follows. I'll just leave it at that. There isn't much about it on the net.

[...] DDC/CI specifies a means for a computer to send commands to the monitor, as well as receive sensor data from the monitor, over a bidirectional link. [...] Some tilting DDC/CI monitors support an auto-pivot function, where a rotation sensor in the monitor enables the operating system to keep the display upright as the monitor is moved between its portrait and landscape positions.

Most DDC/CI monitors support only a small subset of MCCS commands and some have undocumented commands. Many manufacturers did not pay attention to DDC/CI in the past, but now almost all monitors support such general MCCS commands as brightness and contrast management.

(or)

Switch from DisplayPort to HDMI and block pin #19 with electrical tape.
Unfortunately this is only possible if monitor and graphics card have additional HDMI ports.

• Pin 19: Hot Plug detect (all versions) and HEC Data+ (optional, HDMI 1.4+ with Ethernet)

DisplayPort also has a Hot Plug pin (pin #18), but I doubt someone is able to tape this specific pin since DP connectors are just too small.

nixda

Start Shutdown Not Working

nixda

Guys - This was my entire solution. I had to do all 3 of these things to get it to work.

1. Update your Nvidia Drivers to the latest version and restart your computer
2. Go into each monitor and turn off the DDC/CI ability (DISABLE IT)
3. Follow these instructions: https://sites.google.com/site/ebobster/stuff/displayportblanking

This will work for you. I had to hack at this a while to figure this out. It's a combination of all of these things to get it to work properly. You might have to reload your EDI files more than once to get it to work but you can succeed. :)

There is no reason to disable pin 19 to get this to work if you follow my instructions.

This doesn't apply to all Samsung monitors but on my SyncMaster BX2031, I found that if I go to the monitor's built-in menu, go to Setup & Reset and set Magic Return to OFF, I don't have the issue. I think this is Samsung's attempt at saving on system performance by disabling an unused screen. However, I'm not entirely sure if this is the only function of the feature so be safe about it.

To clarify, on Samsung monitors go to [Menu -> Setup & Reset -> Magic Return -> off]

glenneroo

A 'simple' registry change, taken from here. It works for me mostly. Programs snapped to the lower right corner are moved ~300px closer to the center on my 4k screen, but I can deal with it, especially since it means I won't have to install a 3rd party app:

Using Sysinternals ProcessMonitor I found that Windows was accessing the following Registry path:

My system had three entries:

Under each is a tree called '00', two of the keys arePrimSurfSize.cxPrimSurfSize.cy

Under '00' was another branch also called '00', two of the keys areActiveSize.cxActiveSize.cy

The first two of the configs (ie DELF00... & QHD3...) the above keys were 1440x900,so they were not involved.

The third (SIMULATED...) were set to 1024x768.

I changed these to 1600x900 and the problem was solved.

Further I changed resolution (via control panel) to 1920x1080, the moving/resize issue returned,but the lower right corner was set to 1600x900, i.e. the SIMULATED... settings.'Use MichealAtOz's advice but within all the folders that are labeled '00' or '01', (etc, I had 00 and 01) look for any settings that contain 1024, 768, or I 4096 in the data values at the end in parenthesis. Change the 1024 to the x resolution of your desktop (the first number in resolutions) and the 768 to the y resolution of your desktop. Change the 4096 number of 'Stride' to whatever number there already is in a '00' or similar titled folder that already has (without you changing them) the desired desktop resolution numbers in primsurfsize.cx and ...y. Right click the name and choose modify, then select binary as the base to enter correct resolution values.

Andreas Rejbrand

Not a fix, but a workaround. I noticed that if you minimize windows before the display is powered off and do not restore them until the display has returned, then the windows are not rearranged.

I leverage that fact to provide a 'seamless' experience for myself as I have documented here: http://thelamprechts.blogspot.com/2014/09/a-windows-workaround-to-maintain-window.html

For me, I am on Windows 8 and my monitor (connected by DisplayPort) was automatically turning off every time I locked my PC, after a 60 second delay, which produced the issue described in this question. The other suggestions in this Q&A weren't workable for my monitor (Samsung 4K UHD 28” Monitor U28D590D). I was able to successfully work around it by following the instructions here to disable this behavior:

In short, I ran this at the command line:

This sets it to only turn off after one hour (3600 seconds), so now I can lock my PC when I walk away from it for just a few minutes without my windows getting jumbled. This does not directly address the question's original scenario (which involved manually turning off the monitor) but I thought others may find it helpful.

Try to set D-port monitor as main display both in BIOS and Windows Display Settings.

Source: This article

VL-80VL-80

Check the solution in the following post (Friday, September 16, 2011 8:28 PM):http://social.technet.microsoft.com/Forums/windows/en-US/8a9b5aa7-fe33-4e6d-b39b-8ac80a21fdc2/disable-monitor-off-detection-how#c6e69e04-c0a5-44e1-a87e-7d83efb38efd

This is a very long thread - if the above way does not work for you, maybe the following solutions there can help you?!

ChrisChris

For those using DisplayPort and has DVI input on monitor there is a hardware solution:
DP to DVI Akasa AK-CBDP15-20BK active adapter

I'm using two of them with my two Dell U2713HM 2560x1440 60Hz and AMD RX 480.

...still I can't believe I'm using new hardware to solve a software issue... shame on you Microsoft/nVidia/AMD!!!

I have the option to disable DisplayPort 1.2 on my Monitor's OSD. This resolved the issue for me.

I had exactly the same problem with my HP Z24i displays connected to the USB-C dock of my HP ProBook 430 G5. The displays disappeared when turned off. Not only that, but the displays also disappeared whenever I locked the computer and waited for 60 seconds. Also, sometimes the displays went to a permanent 'amber' power state where not even pressing the power button of the monitor did anything and I had to manually remove the power cord, wait for 5 seconds for the capacitors to discharge and reconnect the power cord.

The solution is to adjust the settings of the monitor.

1. Press the 'Menu' button on the display twice to open the menu.
2. Select Input Control...
3. Select DP Hot-Plug Detection...
4. Change from Low Power to Always Active
5. Select Save and Return
6. Select Save and Return
7. Select Exit

I assume most displays have a similar setting.

Then, after doing these adjustments on all displays, I changed the Windows power plan to never turn off the displays. Whenever I walk away from the computer, I lock the computer and turn off all displays manually from the power button.

This is a hardware issue, not a software issue.

juhistjuhist

Try this:

1. Go to Control Panel> Power Options.
2. Edit the plan you use by clicking Change Plan Settings.
3. Once here click Change Advanced Power Settings.
4. Once there, go to USB Settings, open the menu by clicking the +, and open the next menu named USB Selective Suspend Setting. Disable it.
5. Once this is disabled, Windows 7 will no longer adjust your display setup when a display is turned off.

I just tested it, and it works for my double screen setup (HP ZDisplay Z23i 23' SCreens) with Win 7 and GeForce GT630.

Excellll

Same problem bothered me after I switched to DP monitors. I found a solution that works for me: instead of turning off the monitors by pressing the button on monitor, I turn off screen from windows.I'm using a lenovo PC and its Power Manager software has a feature to put a 'power off monitor' option if i rightclick desktop. I believe for other pc you can download a tool like NirCmd or Monitor Off to do that. When I turn off monitor in this way, my monitors would go to sleep mode but stay connected; And when I wake them up all the windows stay where they were.

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Before you begin

You can resolve many display issues by updating the software on your Apple devices, cables, and adapters. If you can see an image on your screen, check for software updates using the Mac App Store:

1. Connect your external display and any Apple video cables or adapters that you use with it.
2. From the Apple menu, choose App Store.
3. Click the Updates button in the App Store window.
4. Install any macOS or firmware updates that are listed.

If you're using a display, hub, extender, or adapter not made by Apple, check with the manufacturer for any updates that might be available.

If you're trying to connect a 4K display or Ultra HD TV with your Mac, make sure your computer meets the requirements for using these external displays.

If your software and firmware are up to date, or if you can't see the image on your screen, try the steps below for your specific issue.

If the display image is blank or unusable

Try these steps if you don't see an image on your display. These steps can also help if the image on your screen repeatedly turns on and off (flickers), if horizontal lines appear (snow), or if the image is distorted (torn or scrambled).

These steps likely won't help if the issue is only happening in one app. If you see similar issues in only one window or app, check with the app's developer for updates or more help.

Mac Displayport Not Working After Manual Shutdown Windows 10

Check connections

Check the connections to your Mac and external displays:

• If you're using an Apple notebook, try connecting its power adapter.
• Make sure the external display's power cable is securely connected and that your display is turned on.
• If you're using a Mac Pro (Late 2013) make sure your displays are connected to the right ports.
• If you're using a display hub, switchbox, or 'KVM,' try connecting your display's video cable directly to your Mac instead.
• Disconnect the video cable where it plugs into your Mac, then plug it back in to reseat the connection.
• If you're using a video adapter, unplug the video adapter from your Mac, then plug it back in to reseat the connection.
• If you're using more than one video adapter to connect your display (the adapters are 'chained' together), try connecting the display using only one adapter if possible. Some video adapters can't be connected together. For example, a mini DisplayPort to DVI adapter can't be connected to a DVI to HDMI adapter.
• If your display has more than one video connection, see if using another connection on the display works. If possible, check to see if using a different display or a different adapter works.
• Try using a different cable that you know is in working order. Check with the display's manufacturer to make sure you're using the cable they recommend.
• Restart the Mac with the display connected.

Detect your display

If you're using an external display, sleep and wake your Mac to make it check for connected displays:

1. Press the power button on your computer to put it to sleep, or choose Apple menu > Sleep.
2. Wait a few moments, then press a key on your keyboard or click your mouse or trackpad to wake your Mac.

If you're using more than one display, and you can see the image on one of the displays, you can also use Displays preferences to check for connected displays.

Adjust video settings

If there's no image on your display, try adjusting your display's brightness or contrast. If there's still no image, or the image appears torn or scrambled, try selecting a different video resolution in System Preferences.

Adjust brightness

• If you're using an Apple Display, press the increase brightness key on your Apple keyboard. To adjust the brightness of a secondary display, press Control-F2.
• If you're using a display that's not made by Apple, check the documentation that came with your display to see if it includes built-in controls for adjusting its brightness or contrast.

Change your display resolution

1. From the Apple menu, choose System Preferences.
2. Click the Displays icon.
3. Click Default for display. If you see more than one resolution listed, choose a resolution and refresh rate. If the display turns off when you change resolutions, press the escape key to undo the change.
   

If you can't change the resolution of your display because you can't see an image, restart your Mac in safe mode to reset the display resolution to defaults.

If starting in safe mode doesn't resolve the issue, reset your Mac's NVRAM and SMC to reset the video ports on your Mac to their defaults.

Check for third-party display software

Mac Displayport Not Working After Manual Shutdown 2017

If your display works only when your Mac is started in safe mode, and you have display-related software installed, check with the software's developer for updates, or try temporarily uninstalling it.

If an image appears fuzzy or blurry

Mac Displayport Not Working After Manual Shutdown On Iphone

If images or text on your display appear pixelated or blurry, check these things.

Check your display resolution

Make sure your display resolution in System Preferences is set to its default. If you're using a resolution that's scaled, the image might be magnified to fit the display. This can cause the image to look blurry in some apps.

1. From the Apple menu, choose System Preferences.
2. Click the Displays icon.
3. Select Default for display.
   

If you use a monitor or an HDTV connected with an HDMI cable, you might see a difference in video quality if your display is set to television mode. Check your display for a 'monitor mode' setting to get the best video quality.

Retina displays

If an app you're using appears low resolution on your Retina display, check to see if an update to the app is available. Most apps have been updated to use the higher pixel densities of Retina displays.

Lower-resolution images on some web pages might also appear 'softer' when viewed on a Retina display. This is because Retina displays have a higher pixel density and not all websites use Retina-ready images.

For example, the images below look different when viewed on a Retina display, but the same on a non-Retina display. This happens because the Retina-ready image has a higher pixel density:

If you see contrast or color issues

If your entire display image seems too dark or too bright, you can adjust the brightness and contrast from the Displays pane of System Preferences, or by using your display's built-in controls.

Adjust brightness and contrast

To adjust the brightness of your Apple display, press the brightness key or F2 key on your keyboard. You can also use the brightness adjustment for each connected display in System Preferences > Displays.

Displays not made by Apple sometimes have brightness and color adjustments built into the display. Check the documentation for your display to see if it includes built-in controls.

When you connect a display, projector, or HDTV using an HDMI cable, you might see a difference in video quality if your display is set to television mode. Check your device for a 'monitor mode' setting to achieve the best video quality.

You can also calibrate each display from the Color tab of Displays preferences to get the best color and brightness from your display.

If you see bright or dark pixels

If individual pixels on your display seem too bright or too dark, see these articles for more help:

Connecting displays with Thunderbolt 3 (USB-C)

The Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter connects Mac models with Thunderbolt 3 (USB-C) ports to older devices that use Thunderbolt (10Gbps) or Thunderbolt 2 (20Gbps). For example, this is the adapter that you should use to connect your MacBook Pro to an Apple Thunderbolt Display or a third-party Thunderbolt 2 storage device.

This adapter doesn't support connections to Mini DisplayPort displays, including the following Apple adapters and displays:

• Apple Mini DisplayPort to Dual-Link DVI Adapter
• Apple Mini DisplayPort to DVI Adapter
• Apple Mini DisplayPort to VGA Adapter
• Apple LED Cinema Display

If you're using the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter to connect to a compatible display and the display doesn't show an image, try unplugging the adapter and plugging it back in.

Get more help

If you've tried these steps and your display still isn't working, contact Apple Support to get more help.

Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).